20. In which kind of blood-vessel can the pulse be felt? In which kinds can it not be felt? Explain the reason of the difference. (Certificate, 1905)
21. How is oxygen conveyed from the lungs to the various parts of the body? Describe what could be observed if a drop of blood were spread out on a piece of glass and examined under a microscope. (King’s Schol. 1905)
CHAPTER XIV.
SOME OTHER MAMMALS.
48. THE CAT AND DOG.
1. The external characters of the cat.—Carefully and gently examine a cat, and make notes of the following characters:
(a) Hair.—What is the covering of the body like? Is the hair like that of a rabbit, i.e. fur ([p. 216])? Are the whiskers very noticeable? On what parts of the head do they grow? Are the fur and large whiskers in any way connected with the animal’s habits?
(b) Eyes.—Look at a cat’s eyes in a bright light. Is the pupil (p. 212) round or slit-like? Keep the cat in the dark for a few minutes and then look again at the pupil of the eye; has it changed in form? Is the change of any advantage to the cat?
(c) Teeth.—Gently open the cat’s mouth and examine the teeth. Notice the sharp, pointed teeth behind the incisors ([p. 219]); they are called the canine teeth. Has a rabbit any canine teeth? Why does a cat, and not a rabbit, need such teeth? Feel the remaining teeth with your finger; are they flat like those of a rabbit, or sharp-edged? How are the characters of the teeth associated with the kind of food? Watch a cat eating; does it chew its food or swallow it “in lumps”?