INDEX 



References to illustrations are indicated by an asterisk (*). 



Abdomen and viscera in human 



body, *309 

 Absorption in human body, 313; 



object, 313; where it takes place, 



313; of sugar, 313; of fats, 313; 



of water, 314; of salts, 314; of 



alcohol, 314 



Aenigmatis blattoides, *424 

 Agalendiae, 168 

 Age, old stone, 390; paleolithic, 390; 



newer stone, 391; neolithic, 391; 



metal, 391 



Ages, geologic table of, 281 

 Air, composition of inspired and 



expired, 346; quantity breathed, 



347; tidal, 347; residual, 347 

 Akka pygmy, *397 

 Alcohol, absorption by human body, 



313; effect upon digestion, 315; 



effect on circulation, 328; effect 



on nervous system, 366 

 Alimentary canal of human body, 



structure, 303; function, 303; 



diagram, *304 

 Alligators, 212 

 Alveolus, 344 

 Amceba, structure and behavior, 



38; changing shape, *39 

 Amylopsin, 312 

 Anatomy, definition, 1 

 Anopheles maculipennis , malarial 



mosquito, *128 



Anosia plexippus, *447 



Antelocapra americana, *252 



Antelope, *252 



Antenna of carrion beetle, bearing 

 smelling pits, *72 



Ants, fly guest of, *424; social para- 

 sites of, 425 



Aorta in human body, 320, 321; 

 branches, 322 



Apes, 256 



Apis mellifica, queen, drone and 

 worker, *433 



Aquaria, how to prepare, 469 



Aquarium, battery jar, *472 



Arachnida, 149, 162 



Arachnoid membrane, in human 

 body, 358 



Argiope, 169 



Aristolochia clematitis, *458 



Arm of man, diagram to show how 

 the bones and muscles act, *53 



Arrow head of ancient man, *386 



Artery in human body, aorta, 320; 

 pulmonary, 320; phrenic, 322; 

 cceliac axis, 322; superior mes- 

 enteric, 322; renal, 320, 322; infer- 

 ior mesenteric, 322; coronary, 322 



Arthropoda, 149 



Artiodactyla, 250 



Ascidian, *193 



Asclepias flowers, honeybee at, *456 



Association centers in human brain, 

 *363 



483 



