Imagens da página
PDF
ePub

its first insect-I, at least, observed its ability as an insect catcher develop from almost nil to expertness. During these excursions, observations were made and data collected for the determination of the following questions: Is there an inherited discrimination in favour of the capture of certain edible insects in preference to others? If unsavoury insects are unwittingly taken into the mouth, are they swallowed? If ejected from the mouth, are there signs of disgust? When unsavoury examples are met a second time, are they avoided?

To the first question I can reply that, at first, all insects were indiscriminately seized. A vile-smelling hemipteron was as tempting as a luscious grasshopper or cricket. Distinctly unsavoury insects (Tetraopes, Coccinella) were not touched a second time, except with the greatest caution; though species which were only moderately distasteful (Lema) might be taken and devoured, but without relish. In one case a large brown ant-the first found-was seized, mulled, and vigorously ejected. The next day the bird was taken to the same tree, and, on perceiving a second ant of the same species, eyed it closely and deliberately, and then shook its head and vigorously wiped its beak, with unmistakable signs of recollection. I mention this particular case, though it is not the only one, to illustrate how quickly the bird was self-taught, for the ant was only one of a dozen different species of insects which were met, and it was so instantly seized that a prolonged visual image was not gained. I might add that the kingbird subsequently refused even to try the edible qualities of a large black ant of a different species, though the bird watched the insect's movements with much interest. Profiting by mistakes, it soon learned to examine critically all strange food,

before the tongue should force the contents of the mouth on towards the pharynx.

Can we not, then, conclude that the forcing of acceptable food and drink into the pharynx is not "instinctive," but is the result of a series of satisfactory discoveries of the young bird, which lead up to the placing of the food where it will bring about the stimulation of the reflex centre of the gullet, and the accomplishment of the final act of swallowing?-a series which is intelligently adopted by the bird, and improved by practice.

It is perhaps well, before closing, to revert to the peculiar habit of the bird in snapping at falling drops. From the first, the attention was markedly attracted by flying insects, and any small objects in motion seemed to have a peculiar charm. From this fact I am inclined to think that the seizing of drops was no more than the striking at moving objects, though it is possible that the adult habitually takes water on the wing by seizing falling drops of dew or rain.

[blocks in formation]

eyes, condition at birth, 241

Preyer on, 261

remarks on diary of, 261, et seq.
scratching by, 260

sense of support in, 262

some conclusions regarding,

262, 263

- Spalding, D., on, 261

swallowing by, 258, 260
taste in, 259

vision in, 259

warmth, effect of, on, 259, 262
wiping, reflex in, 259

wiping beak by, 260

Chickaree, significance of wide ranges
of, 73

Child and dog compared morally, 25
Chimpanzee, expression of, etc., 42
Chipmunk, habits, etc., of, 53, 55,
57, 59, 72

Cortex at birth, in the dog, 268, 270
in the dog and cat compared,
270, 273

in the rabbit, 273, 274
in the cavy, 274

in birds, 275

general conclusions regarding,
275, 276

Craig, on the Chipmunk, 72

DARWIN, C., on feigning, on migra-
tion, etc., 29, 42, 47, 67
Dawes, on Cocker Spaniel, 33,

on horse training, 43, 44
Dog, special cases, 33, 35, 36, 39
Dog and Cat compared, 221, et seq.

cat in advance of, in co-ordina-
tion of movements, 225

cats and, education, 227, 230
- comparison of the brain de-
velopment in, 226

conclusions, general, as to differ-
ences between, 232, 233

experience and instinct, effect of
former on cat, 231

229

independence in the cat, 227,

intelligence and memory, 228
reasoning in the cat, 232

slow development of social
instincts in the cat, 227

[blocks in formation]
[blocks in formation]

IMAGINATION in animals, 21, 37
Imperfection of instinct, 289
Individual, history of, important, 67
Inference from men to animals, 20
Inferiority of animals in all respects
questioned, 15

Intelligence and hibernation, 57
Instinct, to explain animal intelli-
gence, 19

JONES, T. MANN, remarks on kitten,
tom-cat,' sheep-dogs, etc., 203, 204,
220, 221

KITTEN, the diary of, 175, etc.

advance of, 202

affection in, 200

anger in, 189

[blocks in formation]

biting in, 182

bookshelves, special experience
with, by, 184-88, 204, 205

call of "Puss! puss!" effect of,
181, 183, 185, 189, 196, 197, 201
catching of tail by, 189

catching flies, etc., by, 188, 193,
194, 201

caution in leaping, 191, 198, 199
choice by, 198

climbing in, 181, 182, 190, 191,
192, 194, 195, 199, 200

concealment by, 193, 197
conclusions, general, regarding,
205, 206

condition of eyes and ears at
birth, 176

covering by, 193

crouching by, 190, 195

crying in, 183, 186, 187, 188,

191, 192, 197, 199, 201

discussion of diary of, 202, etc.
dislike in, 178

eating, etc., in, 205

expression altered in, 197

of intelligence in, 188

fatigue in, 200

fear in, 186, 187, 190, 191, 192,
194, 196, 200, 202

194

202

feeding of milk, 185, 186, 187

of solid food, 189, 191, 193,

fondness shown for fish by, 197
growth of, 189, 191, 196, 197
hearing in, 177, 179, 181 192,

[blocks in formation]

Kitten, movements of head, 179
of hind legs, 179

177

of tail, 179, 182, 183, 186
in crawling, 176

in sleep, 187

opening of eyes in, 177
out of doors, 197

pain, sense, latent period in,

-persistence in, 196, 197, 199
physical changes in, 188, 194,
196, 197

play in, 181, 182, 185, 188, 192,
195, 197, 203

power of attention in, 198
pupil, reflex in, 203

punishment of, 193, 196, 198
purring in, 195, 196, 200
quivering of ears in, 178

reaction towards dog by, 176,

177, 180, 203

reflexes, pupillary, 179
winking, 179, 202

resemblances to mature cat, 198
running off, 189, 193, 194
sand-pan, experiences with, 186,
187, 189, 190, 193, 197, 199, 204
scratching, 180, 198, 200, 203
shadows, observation of, by,

183

[blocks in formation]
« AnteriorContinuar »