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knowledge of the ground displayed. quitting his usual studies to meddle
It is not good generalship to intrust with mathematics. So easy is it to
even the details of a siege to a blunderperceive the “presumptive dogmatism”
ing gunner or a rash volunteer. And of another, and to overlook our
I must consider the Professor as a own!
most unfortunate, though perhaps a You perceive I have not said a word
courageous enfant perdu, after this in defence of the Hebrew language;
specimen of his skill, although he I thought it would be ridiculous to
may be enlightened enough, in other offer any against such an assailant.-
respects, to be entitled to sneer at the I shall, however, add, that those who
credulity of Luther, the dreams of the are acquainted with it know, that for
Christian fathers, and the “ fancies” simplicity of construction, regularity
of Saint John, (p. 230.)

of derivation, conciseness, perspicuity,
Professor Leslie's mistake, it may and force, it is not equalled by any
be said, is a mere trifle, not worth the language in the world --but on this
paper employed in exposing it. It is occasion I need not appeal to Hebrew
true, indeed, that as no man is actual. scholars. He who reads the Bible in
ly bound to know Hebrew, there is no his vernacular tongue will agree with
great disgrace in making an erroneous me, that the man who attributes the
assertion concerning this language; extreme of rudeness and poverty to
but I assert, that no man has a right to the language of the sublime lyric ef-
pass a dogmatical and insolent judgment fusions of Isaiah, the energetic drama
on any branch of knowledge whatever, of Job, the unrivalled pastoral of Ruth,
of which he is so wretchedly ignorant not to mention other splendid passages
as not to know its first elements. Mr of Scripture which instantly crowd
Leslie would look, with deserved on the memory, must be satisfied to
contempt, on him who should ven- lie under the imputation of pitiable
ture to call Euclid a poor mathema- ignorance, or still more pitiable pre-
tician, if the very sentence which con- judice.
veyed the charge furnished also a Apologizing for the length of this
proof that that critic was ignorant of letter, which has grown to a much
the definitions of geometry; and how greater size than I intended, I am,
are we to look on the professor him- sir, your most obedient servant,
self ? He may believe me when I tell
him, that in the eyes of those who
know any thing on the subject, he Your printer has made me
makes as awkward a figure as the break Priscian's head sorely in the
most deficient digit he ever* “ caused translation of Chevy Chace, by print-
modify." He may also assure him. ing me hic occursum ire, for hic
self that the rule, ne sutor ultra cre- occursum ire. (Chevy Chace, verse 9.)
pidam, is truly a golden one. He is, I should not mention such a trifle, but
perhaps, a mighty respectable third that I wish to say that my translation
or fourth rate mathematician, a re- was not intended to be quite Augus-
frigerator of any rate he pleases--and tan. There are many rough passages
an arithmetician scarcely second to in it, which are given as imitations of
Cocker himself; but when on the the rusticity of the old ballad. In a
strength of these qualifications he word, I thought that a poem, in a dia-
thinks fit to step into philosophy, or lect almost as remote from the idiom
to invade the province of critics and of modern England as Mr Kirkman
scholars, nothing can be more pitiful. Finlay's, would be most accurately
And yet (p. 232.) he blames Joseph translated in a style somewhat resem-
Scaliger whose name as a man of bling the un-latinity of the Musæ
learning is rather higher than Mr Edinenses; but I was afraid to ven-

a mathematician,) for ture quite so far as they have done.

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Leslie's as

An elegant phrase of Mr L.'s. “ To transform the ordinary characters, (says he, p. 117.) therefore, into deficient digits, I have caused modify their shape thus ; " and a very wise and pretty modification it is. For the puzzle it occasions you need only look into the work.

A RECOLLECTION.

Let me for once describe her-once,- for she
(Julia) hath passed into my memory
As 'twere some angel image, and there clings
Like music round the harp's Æolian strings :
A word breath-revives her, and she stands
As beautiful, and young, and free from care
As when upon the Tyber's yellow sands
She loosen'd to the winds her yellow hair,
In almost childhood, and in pastime run,
Like young Aurora from the morning sun.
Oh! never was a form so delicate
Fashion'd in dream or story, to create
Wonder or love in man. I cannot tell
Half of the charms I saw-I see—but well
Each one becomes her. She was very fair
And young, I said ; and her thick tresses were
Of the bright colour of the light of day :
Her eyes were like the dove's

like Hebe’s-or
The maiden-moon, or star-light seen afar,
Or like some eyes I know, but may not say.
Never were kisses gather'd from such lips,
And not the honey which the wild bee sips
From flowers that on the thymy mountains grow
Hard by Ilissus, half so rich :-her brow
Was darker than her hair, and arch'd, and fine ;
And sunny smiles would often, often shine
Over a mouth, from which came sounds more sweet
Than dying winds, or waters when they meet
Gently, and seem telling and talking o'er
The silence they so long had kept before. C. L.

TO THOMAS CAMPBELL, ESQ.

An Expostulatory Epistle occasioned by the following passage in his Specimens of English

Poetry.

« Stevens celebrated hard drinking, because it was the fashion and his songs are now seldom vociferated, because that fashion is gone by." Specimens, Vol. VI. p. 437.

Sır, in your last work you the logic display
of Aldrich" or Burgerdick, Crousaz or Hamel,
But I think that you err very much when you say,
That the fashion of drinking is past, Mr Campbell.
If fashion rejects jolly topers, 'tis plain,
That fashion's an ignorant sort of a strammel ; +
And a fashion so senseless, so dull, will remain
But a short time in vigour, I think, Mr Campbell.
In Ireland, I'm sure, many ages must roll
Before with such rules our free spirits we trammel,
Before the bright lights of the bottle and bowl
Will cease o'er our tables to shine, Mr Campbell.

Four logicians. The first as honest a fellow as ever filled a pipe ; the other three were mode and figure men.

† It is not worth while to print after the etymon of this word ; in Ireland it signifies a sluttish awkward woman ; it is synonymous with the short word for female dog.

Come over among us, sweet bard, and I swear,
That when home you return with a nose red as stammel,
You will never again be so prompt to declare,
That the sons of gay Bacchus are deud, Mr Campbell.
Then oh! by that face which in prospect I view,
All glowing and grand with its purple enamel,
Retract your rash statement. So, Thomas, adieu,

For my punch is just out and I'm ftir’d, Mr Campbell.
Cork, Jan. 24, 1820. Half-past one o'clock in the morning. P.T. T.

* Reddish cloth, used by B. Jonson, Beaumont, and Fletcher, Sir W. Davenant, &c.

+ Tired, according to Cobbett in one of his "years residences in America," is a quaker word to express drunk. How true this is I know not; but I supplicate the gentle reader to take it here in its more usual sense.

# i.e. Post ten tumblers.

ABSTRACT OF METEOROLOGICAL OBSERVATIONS por 1819.

MR EDITOR, The following abstract of my meteorological observations for 1819 will be found I hope, not altogether uninteresting. I am aware, indeed, that of its intrinsic value, your readers and I may probably entertain very different opinions. To some it may appear a very dry morsel amidst the more exquisite and delicious viands which your monthly bill of fare contains, while my own eye will be running over the dense columns of figures with all the pride of a successful theorist, contemplating the experimental proofs of his favourite speculations. But whatever importance may attach to the subject itself, I can assure your readers that they may depend on the accuracy of the facts stated below.

The titles of the different columns, under the heads Thermometer and Barometer, are abundantly obvious. Those under the Hygrometer may, perhaps, require some explanation, particularly the three results deduced from Mr Anderson's principles of hygrometry: The first of these is the point of deposition, or that temperature at which the air, if cooled down, would begin to deposit its humidity. The second is the absolute quantity of moisture contained in a hundred cubic inches of air, expressed in decimals of a grain, Troy. And the third is the relative humidity of the atmosphere, supposing absolute dryness to be denoted by 0, and saturated by 100; or, in other words, the quantity of moisture expressed in hundredths of what would produce complete saturation. For a farther explanation, I refer to your twenty-second Number, page 472.

Latitude 56° 25', Elevation 185 fect.

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Jan. 42.5 33.3 38.2 36.8 37.9 37.5 9.2 41.11 44 29.422 44 29.390 44 29.406.191.197.388 Feb. 41.7 31.9 36.9 35.6 36.8 36.2 9.8 39.3 43 29.363 43 29.371 42 29.367.173.171.344 Mar. 48.3 36.7 43.8 40.7) 42.5 42.2 11.6 40.9 47 29.669 47 29.689 47 29.679.123.121.2441 Apl. 51.0 37.9 46.5 42.3 44.5 44.4 13.1 44.350 29.666 50 29.657 50 29.661 .084.073.157 May 57.4 43.3 52.4 46.6 50.3 49.5 14.1 48.0 54 29.787 54 29.787 54 29.787 .082.047.129 June 62.6 45.8 57.4 50.3 54.2 53.9 16.8 51.7 59 29.662 59 29.678 59 29.668.095.088.183 July 67.0 51.9 61.9 55.5 59.4 58.6 15.1 56.4||63 29.867 63 29.890 63 29.879.077 .070.147 Aug. 69.9 55.4 64.6 59.2 62.6 61.9 14.5 60.7|67 29,911 67 29.899 67 29.905 .070 058.128 Sept. 60.2 47.6 55.8 52.5 53.9 54.1 12.6 56.9|59 29.75359 29.775 59 29.764 .110.079.189 Oct. 51.9| 40.5 47.6 45.2 46.2 46.4 11.4 52.253 29.704 53 29.739 53 29.721.093 .105.198 Nov. 141.9 31.6 37.3 35.6 36.8) 36.5 10.3 43.044 29.594 44 29.594 44 29.594.144.157 .301 Dec. 37.0 27.4 33.6, 31.9 34.2 32.8 9.6 40.3 40 29.566 40 29.583 40 29.574.122.122.244 Avr. 52.6 40.3 48.0 44.3 46.4 46.2 12.3 47.9 52 29.664/52 29.671 52 29.667.113.108 .221 VOL. VI.

3S

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Jan.

3.372 .975 6.8 6.5 6.7 33.8 32.7 33.3.146.139.142 86.4 87.1 86.7 Feb. 2.191 .750 7.5 7.2 7.41 31.7 30.4 31.11.136.130.133 84.5 84.1 84.3 Mar. .758 1.800 15.9 11.5 13.7 34.3 33.4 33.8.149.1441.146 73.7 78.7 76.2 April 4.175 1.840 19.2 10.8 15.0 36.0 35.7 35.9.156.155.156 72.0 81.2 76.6 May 1.238 2.650 25.7 11.3 18.5 39.3 40.7 40.0.180.182.181 67.6 82.9 75.3 June 2.617 2.800 28.4 13.1 20.8 45.8 443 45.0.216 .204 .210 69.9 82.6 76.3 July 1.256 2.735 28.0 13.4 20.7) 51.9 50.2 61.1.264 .248.25674.0 84.6 79.3 Aug. 1.308 2.365 24.3 11.2 17.8 57.3 55.4 56.4 .310 .292) .301 79.8 88.5 84.1 Sept. 1.523 1.950 21.5 13.11 17.3 46.9 46.6 46.8.224.224.224 75.9 82.9 79.4 Oct. 4.015 1.430) 14.2 11.3 12.7 39.5 38.4 38.9.187.180.183 77.7 80.2 78.9 Nov. 1.518 .825 9.3 6.7 8.0 30.9 30.8 30.9.132.132 .132 81.3 85.5 83.4 Dec. 1.654 .665 5.4 5.2 5.3 29.5 28.2 28.9.127.121.124/ 87.2 88.3 87.8

Avr. 25.625 20.785 17.2 10.1/ 13.6 39.7) 38.9 39.3.186.179).182 77.5 83.9 80.7)

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Jan. 52.0 21.0 17.0 4.0 30.360 28.690 1.100.050|| 17 | 0 44.6 22.4.204.097 100.0 72.6 Feb. 49.5 21.0 16.5 5.0 29.900 28.770 .748 .030 | 22 042.4 21.01.191.082 100.0 52.0 Mar. 55.0 26.0 18.0 5.0 30.144 28.892 1.133.030 29 1 44.6 12.01.204.068 98.0 41.0 Aprll 58.0 31.0 21.0 5.5 30.150 28.935 .453 .005 38 0 45.6 22.4.211 097 100.0 44.0 May 63.0 30.0 250 5.6 30.060 29.415 .365.005 47 3 53.0 7.0.268 .057 96.0 27.0 June 68.0 41.5 23.0 18.0 30.190 29.175 630 .020 555 54.8 31.41.284.132 94.0 42.0 July 74.0 42.5 22.5 8.5 ' 30.235 29.170.355 .025 505 64.0 38.4 .381.167 95.0 54.0 Aug. 79.0 47.0 19.0 8.0 30.335 28.740 .375 .015 51 3 64.6 43.0.386.194 97.0 53.4 Sept. 67.5 38.0 23.0 4.5 30.420 29.020.540 .010 40 2 59.4 32.4.328.137 98.0 52.4 Oct. 63.0 26.5 22.5 3.0 30.230 29.225 .460.030 27 1 57.6 15.4.309 .070 99.0 47.0 Nov. 50.0 20.5 19.5 5.5 30.165 28.980 .685.110 260 43.4 19.01.197.087 100.0 51.0 Dec. 51,5) 9.5 19.0 2.0 | 30.295/ 28.8401 .705.010) 17 | 0 47.4 18.6.225.086 100.0 62.0

It appears from the above tables, that the mean temperature of 1819 is about seven-tenths of a degree lower than that of 1818 ; the mean height of the Barometer •014 higher ; the quantity of rain 1772 less; and the mean of Leslie's Hygrometer 2 higher. The mean daily range of the Thermometer and Barometer is almost exactly the same for both years. The quantity of evaporation exceeds that of 1818 by 729 of an inch. The mean point of deposition, at 10 a. m. is about half a degree lower than the mean minimum temperature, but the coincidence is sufficiently exact to demonstrate the accuracy of Mr Anderson's principles.

Another observation which has been often alluded to in the pages of your Magazine, and which I think an important one, is amply confirmed by the preceding abstract. I allude to the coincidence between the mean of the daily extreme temperatures, and the mean of the temperatures at 10 morning and evening. The difference for the whole of 1819, amounts only to two-tenths of a degree. For several years preceding I found the mean difference three-tenths.

The temperature of spring-water taken three times a-month, and which gave a result for 1818 coinciding almost exactly with the mean of the daily extremes, is 1.5 degree higher for 1819. It is to be remembered, however, that the great cold of December, which reduced the mean temperature of the air considerably below the usual average for the season, has not yet produced

its full effect on the water. The comparison, therefore, between the two, ought not to be made till that season of the year when the temperatures of the air and the exterior of the earth approach one another, which takes place about the month of May. I have no doubt that then the coincidence will be nearly exact. I am, Sir, your obedient servant,

R. G.

BARLOW ON MAGNETIC ATTRACTIONS,* The variation of the compass, a sub- was allowed to slumber; since nothing ject at all times no less interesting of the least consequence, during that to the philosopher, than useful to the long and enlightened period, was ad. navigator, was first discovered, we are ded to our previous knowledge, on told, by Columbus, in his voyage to this interesting subject. It is, indeed, America in 1492; and Professor Gil- true, that several distinguished navilebrand of Gresham College, in 1625, gators observed, during their respecascertained that this variation was ito tive voyages, anomalies in the variaself of a changeable nature. The dis- tion of the compass, altogether inex. covery of these important and very ex- plicable; and, what appears very extraordinary facts, excited a lively in- traordinary, the more pains that was terest, among men of learning and taken by them to discover them, the science, throughout all Europe ; the further did they go away in point of exertions of our celebrated country- theory. Dampier, when off the Cape man, Dr Halley, on this subject, are of Good Hope, where the variation was well known, and need not be here re- truly estimated at 11°, was much peated.

puzzled, and, no doubt, greatly perThe phenomenon of the magnetic plexed,' to find only 7o 38. Mr dip, or inclination of the needle, acci- Wales, in his second voyage with dentally discovered by Norman in 1592, captain Cook, was surprised and astowas also then a subject of much spe- nished to find, in the English Chanculation and inquiry; and, to render nel, and indeed throughout the voythis law in the magnetic system sub- age, a difference in the quantity of servient to science and navigation, the variation, though observed with the latitude, in any given meridian, was greatest care, of 3o, 4o, 5o, 6o, 7o, attempted to be ascertained by its re. and even 10°. Captain Phipps, after sults; but, the delicacy of the instru- wards Lord Mulgrave, during his ment, and experience, very soon prov- voyage towards the north pole, found ed its demonstrations erroneous; and, the like differences, which he attriuntil the last voyage of captain Flin- buted to the inaccuracies of the comders, was adverted to more as a matter passes. “We made,” says he, seof curiosity to philosophers, than of veral observations, which we found, utility to navigators.

by those taken at seven in the afterThe diurnal variation of the com- noon, to be 17° 9' west; by others, at pass, first discovered by Mr Graham, three in the afternoon, only 7° 47' who has been followed by Mr Weir- west: I could not account for this gentin, Mr Canton, and, last of all, very sudden and extraordinary dethe indefatigable exertions of Colonel crease," &c. Monsieur Beautemp BeauBeaufoy, likewise excited considerable pré, while in search of the unfortu. attention; but though numerous the- nate La Perouse ; Captain Vancouver ; ories have been formed to account for and many others, found the like errors this phenomenon, none, as yet, have of variation, without being able, in any appeared satisfactory to philosophers, way whatever, to account for them; or useful to science, if we except Mr until Captain Flinders, that acute and Barlow's theory, which we here intend penetrating, but unfortunate, man, in shortly to notice.

his last voyage of discovery to Terra From the beginning of the 18th, to Australis, in 1801, 1802, and 1803, the 19th century, this very important, first discovered the true cause produand highly useful, branch of science, cing these hitherto unaccountable dis

An Essay on Magnetic Attractions : Particularly as respects the Deviation of the Compass, occasioned by the Local Influence of the Guns, &c. With an Easy Practical Method of observing the same in all parts of the World. "By Peter Barlow, of the Royal Military Academy. Printed for J. Taylor, Architectural Library, Holborn, London, 1820.

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