INDEX. 



Xl 



females more sombre than of 

 males ... ... ... ... 976 



Birds, why is their plumage som 

 bre when young 977 



Birds, what provision is illustrated 

 in the disposition of their 

 feathers 97!) 



Birds, how is their varied plumage 

 accounted for 980 



Birds, how do they maintain a 

 standing position 982 



Birds, why do many roost upon 

 one leg ... 984 



Birds, why do their beaks indicate 

 their peculiar food 985 



Birds, why are their eyes 

 adapted to any range of sight ... 987 



Bird.-, why does their hearing 

 mainly depend upon the internal 

 structure of the organ 989 



Birds, why do they perch with 

 their faces to the wind 990 



Birds, how arc they able to sleep 

 securely when perched on the 

 branches of trees 992 



Bison, why able to use its horns 

 with more effect than the ox... 530 



Bittern, whv are its habits little 

 known &quot; 914 



Bittern, mode of squatting de 

 scribed 915 



Bleak, why called the water- 

 swallow VMl 



Bleeding, why when the operation 

 is performed, are the veins 

 bound 77 



Blindness, a person cured of ... 118 



Blindness, sensibility of touch in 

 cases 157 



Blood, how formed GO 



Blood, the composition of 70 



Blood, how circulated and puri 

 fied 71 



Blood, illustration of the heart s 

 action 72 



Blood, why so important an agent 

 in animal economy 73 



Blood, the circulation of 74 



Bloodshot, why does the eye 

 become 128 



Bloodhounds, why efficacious in 

 the pursuit of fugitives 2G6 



Bodies, animal, why they vary 

 most in the centra 16 



Bones, why covered with perios 

 teum... ... . ... ... 43 



Bones, the distinct and mutual 

 uses of 45 



Bones, softness of, in infancy ... 4G 



Bones, cylindrical 47 



Bones, why do they not touch... 57 



Bones, why covered with cartilage (&amp;gt;7 



Bower-bird, why so called ... C92 



Bower-bird, habits of 693 



Bruin, the composition of ... 89 



Brain, functions of the gieat and 

 mill 90 



B i &amp;gt; win not injured b&quot; th 

 movement ( &amp;gt;f the spine .. ... 91 



Breathing, why it causes the chest 

 to heave 86 



Breathing, offices of the ribs and 

 diaphragm 87 



Bnffiiloes, whv the horns of, are 

 useful to the animal 523 



Bull-frog, how does it produce a 

 noise 1030 



Butcher-bird, why so called ... 689 



Camel, difference between it and 

 the dromedary 513 



Camel, why so called 5:4 



Camel, why is its neck long and 

 flexible 516 



Camel, why is the formation of 

 the stomach of, adapted for 

 long journeys over deserts ... 519 



Camel, why have its feet large 

 cushions 521 



Camel, how are its eyes protected 522 



Camel, adaptation of its teeth for 

 food 522 



Canary, the plumage of 763 



Canine teeth, why are carnivorous 

 animals provided with ... ... 206 



Carnaria, kar-nar -i-a, why is the 

 third division of the Mammalia 

 so called 183 



Carnaria, why is the first sub 

 order called cheiroptera 184 



Carnaria, why is the second sub 

 order called insectivora 192 



Carnaria, why is the third sub 

 order called carnivora 205 



Carnivora, kar-niv -o-ra, why is 

 the third sub-order of carnaria 

 so called 2^5 



Carnivorous animals, why have 

 they canine teeth 20fc 



Carnivorous animals, why are 

 their molar teeth fitted into 

 each other 207 



Carnivora, how does their anatomy 

 adapt itself to their modes of 

 life 208 



Carnivorous animals, why are 

 the pupils of their e^es vari 

 ously shaped 216 



Carnivorous animals, why in 

 cluded in all the natural classes 219 



Cartilage 66 



Catalepsy 107 



Cat-bird, why so named 694 



Cats, why when playing do they 

 turn on their backs and seize 

 with their claws ... ... 22C 



Cats, why does cropping their ears 

 prevent their climbing trees ... 224 



Cats, why does their fur emit 

 electrical sparks ... ... ... 227 



Cats, purpose served by their 



electricity 227 



Cats, why are they uneasy pre 

 vious to a storm ... ... ... 228 



Cats, by what means are they 

 enabled to extend or withdraw 



their talons 229 



Cats, why do they refuse vege 

 table food 231 



