Page:First course in biology (IA firstcourseinbio00bailrich).pdf/579

 albumin, raw or half-cooked meat is said to be more digestible than cooked meat; but meat that is not thoroughly cooked is dangerous because it may contain trichinæ ("Animal Biology," p. 50) and other parasites. Lean meats contain much proteid. Some persons who cannot easily digest starch and sugar because of fermentation eat fat for a fuel food. Beef tea and beef extracts contain but a small part of the proteid in meat and all of the waste matter, including urea.

1. sirloin 2. loin 3. rump 4. round 5. top sirloin 6. prime ribs 7. blade 8. chuck 9. neck 10. brisket 11. cross-rib 12. plate 13. navel 14. flank 15. shoulder 16 leg

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+================+================+=================+==================    |     |     |       |   |  |    |    |     | +++-+ Examples. | Cat, dog, lion.|  Cow, horse. | Hog, peccary. | Man, monkey. +++-+ Length of | 3 times length | 30 times length| 10 times length | 12 times length food tube.| of body. | of body. | of body. | of head-trunk. +++-+ Teeth. | Pointed for   | Layers of      | Cutting teeth   | Teeth even, | tearing flesh. | enamel and    | project. Canines| close together. | Canine teeth  | dentine forming| form tusks. | Canines not | long. | ridges. |                | projecting. +++-+ Digits. | Sharp claws. | Hoofs. | Hoofs. | Flattened nails. +++-+ Colon. | Smooth. | Sacculated. | Smooth. | Sacculated. +++-+