2 
INDEX 
References are to pages 
Alternate leaves, of beech 
Anopheles, mosquito . 
55 
family. 
297 
cause of malaria . . . . 
55, 493 
of parsley family .... 
300 
Antennae of grasshopper . 
22 
of pulse family. 
299 
Anterior adductor muscle 
of 
of rose family. 
298 
clam. 
186 
of walnut family .... 
297 
Anther, described .... 
198 
Alternation of generations, 
Antheridia of fern .... 
336 
in coelenterates. 
166 
of moss. 
329 
in ferns. 
336 
of marchantia .... 
329 
in mosses. 
330 
Anti-pain medicines . . 
507 
Althaea, member of mallow 
Antitoxin, defined .... 
511 
family. 
299 
described. 
511 
Altricial birds, defined . . . 
113 
in preventing spread of dis- 
American elm, scientific name of 
10 
ease. 
507 
American grape, immunity of . 
530 
use in diphtheria.... 
507 
American Medical Association 
Ants, example of Hymenopte 
ra 
45 
503, 505 
social life of. 
53 
Ammonia in test for protein 
228 
Anus, in digestive system 
of 
Ammonium tartrate in Pasteur 
man. 
409 
solution. 
322 
Aorta, largest artery in man 
453 
Amoeba, classified. 
8 
Aortic arches of earthworm . 
182 
described. 
143 
Apetalous flowers .... 
202 
discussed. 
144 
Aphis, woolly. 
32 
respiration of. 
145 
Apiary, escape of bees from . 
45 
Amount of sleep required . . 
476 
Appendages of grasshoppers 
23 
Amphibians, described 
82 
of crayfish. 
60 
economic importance of . 
97 
Appendicitis. 
. 
408 
example of. 
9 
Appendix, vermiform . 
408 
laboratory study of. . . . 
82 
Apple wood, use of . 
352 
number of. 
9 
Apples, a form of fruit 
236 
summary of. 
98 
example of pome . . . 
237 
Amphioxus, notochord of . . 
69 
produced by rose family . 
298 
Amylops in a ferment.... 
412 
Aptera, order of insects . . 
29 
Anesthetic, defined .... 
479 
Aqueous humor. 
473 
dissolves lipoid. 
480 
Arachnids, list of ... . 
65 
Angiosperms, classes of f . . 
9 
Arbutus, destruction of . . 
395 
defined. 
9 
Arch, of foot. 
434 
Animal biology. 
17 
of hypocotyl of bean . . 
220 
Animal parasites, habits of 176, 
177, | 
Archegonia, of fern . . . 
336 
488, 494 
of moss. 
329 
Animal preserves, purpose of . 
395 
Arctic regions. 
371 
Animal starch, in liver . . . 
414 
plants of, modifications of 
371 
Animals, agents in distribution 
use of lichens in ... . 
326 
of seeds. 
241 
Area of forests. 
348 
decomposed by bacteria . . 
310 
Arms, example of organ . 
7 
without a backbone . . . 
8 
of starfish. 
169 
Annelida, a class of worms . 
175 
Army worm, harmful insect. 
41 
Annual rings, age of tree told by 
342 1 
Arsenic, a poison .... 
487 
in longitudinal sections of 
Arteries, function of . . . 
452 
trunks. 
291 
in circulation of clam . . 
187 
in stem of pine. 
342 | 
of crayfish. 
. 
64 
