556 



INDEX 



protoplasm, 25, 27, 30, 41, 147; 



named by von Mohl, 1841, 537; 



fundamental material of plants 



and animals shown by Schultze, 



538. 

 protozoa, 146; parasitic, 150, 152, 



234, 327, 468; as scavengers, 469; 



diseases caused by, 469. 

 pupa, of butterfly, 207. 

 pure food and drugs law, 443, 444. 

 pylorus, 372. 



rabies, treatment for, 538, 539; see 

 Pasteur. 



Redi, discoveries of, 535. 



Reed, Dr., see yellow fever. 



reforestation, 502. 



rennin, 371. 



reproduction, 6; function of the 

 flower, 108; by spores, 127; of 

 bacteria, 134; of amoeba, 148; 

 in paramoecium, 150; of crayfish, 

 187; of grasshopper, 200; of 

 honeybees, 214; of frog, 261, 267; 

 of birds, 298. 



reptiles, 273-278; value as insect 

 destroyers, 681. 



respiration, 5; plant, 86, 93; com- 

 pared with photosynthesis, 101; 

 of insects, 198; of frog, 260; of 

 bird, 287; development of, 382; 

 hygiene, 429; effect of alcohol on, 

 517. 



retina, 419. 



Rexford, Frank H., 347. 



rheumatism, 432. 



rice, 449. 



rings, annual, see wood fibers. 



Rockefeller Foundation, 442. 



rodents (gnawers), 311; destroy 

 grain, 483. 



roots, characteristics of, 49; structure 

 of, 50; function of, 51; normal, 

 fibrous, tap, fleshy, 53, 54; aerial, 

 aquatic, 54; adventitious: brace, 

 for propagation, 54; climbing, 



parasitic, 55; hairs, 60; pressure, 



61; as food, 454. 

 rosin, 461. 

 Roux, bacteriologist, 142; assisted 



in developing diphtheria anti-toxin, 



539. 



rubber, 461. 



ruminants, non-ruminants, 312. 

 rye, 449. 



salamander, 271. 



salmon, life history of, 248; value as 

 food, 480. 



saliva, 370. 



salvia-flower, 111. 



sanitation, 4, 425. 



scales, fish, 239. 



scallops, 470. 



scars, leaf, flower-bud, fruit, 75; 

 bud-scale, 76. 



Schleiden and Schwann, proved im- 

 portance of cell, 537. 



Schultze, see protoplasm. 



sclerotic coat, 419. 



scorpion, poisonous, 473. 



scurvy, 356. 



sea anemone, 157. 



seed, structure of, 31; growth of, 34; 

 function of, 41; development of, 

 113; dispersal of, 119, 122; by 

 wind, water, animal, 122-124. 



segments, of earthworm, 162; of 

 crayfish. 



semicircular canals (ear), 418. 



sensation, 6; in amoeba, 148; organs 

 of, in skin, 405; "irritability" of 

 plants, 415. 



sepals, 109. 



serum (blood), 395. 



sewage, regulations regarding, 442. 



shade tree pests, 474. 



sheep, applied biologic methods of 

 breeding, 491. 



shrimps, as food, 472. 



sight, sense of, 419; near, far, 422. 



skin, structure and functions, 404, 

 405. 



