apply the results which he has gained to elucidating the knotty questions which abound in this matter, he may yet materially advance the cause of Natural History, if he will keep a written record of what he has found and seen, and place it from time to time in the hands of those who are striving to solve the many difficulties which surround the subject. A specimen of such a record is given in Appendix I. The observations should be minute, and, if possible, accompanied with coloured diagrams, and special attention should be paid to facts which may tend to settle the question of "species" (see Chapter VI.), of the use of the so-called "ovaries," and of the "spike-cases."

And I may add, that if the reader be induced to take delight in the study of Natural History, he will do well to show others also the pathway which leads to this inexhaustible fountain of pleasure, and usefulness, and righteousness. For he may be sure that the more a man loves Nature the more will he recognise and worship God in Nature, and the more will he be desirous of performing the duties which are peculiarly essential to his own station in the creative circle-duties which, like himself, are of a twofold nature, material and spiritual. He will be convinced that health, whether of body or mind, is Nature, that disease is a retributive consequence of man's violation of the laws of Nature. He will eventually believe that the theolo

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gians' '"sin" and the political-economists' "crime" are as much diseases and as curable as the medical man's "cholera" and "typhus." He will further get to realise the old proverb that "Prevention is better than cure," nay, that (taking man as a whole) it is the only true cure. He will thus, if he be more than a word-maker and a theorist, strive to place his own soul and body, and those of his brethren, within the influence of those conditions of existence which only are true because only from God.

He will avoid mental and bodily infection, contagion, malaria and the like; nay, he will avoid medicines which cure by exciting disease, for when he has once arrived at a conclusion on the subject of the laws of health, he will know that, if they be unbroken, neither disease nor medicine-its consequence-need ever be incurred. He will be content if he can attain his "summum bonum," the " mens sana in corpore sano;" he cannot be too thankful if he be allowed upon earth to exercise perfectly his perfect faculties in strains which may thus be best trained for the choruses of eternity.

In a word, then, he will ensure to himself, his fellow-man, and all created objects with which he is in relation, those conditions of healthy existence which have been constituted such by an all-wise Creator; he will thus apply all hisenergies in promoting the spiritual well-doing and well-being of the whole race of mankind, and in glorifying the God of the natural and the invisible world.