848 
Reproductive system of— 
a Vertebrates . 
Reptilia 
>, and Birds . 
a development of. 
»» extinct 
», Yelationships of 
Respiration in Animals 
Respiratory system of— 
5 Acarina 
+3 Amphioxus . 
a5 Anodonta. 
ey Arenicola 
a Ascidian . 
- Balanoglossus 
5 bee i 
‘6 cockroach 
55 crayfish : 
#4 Crocodilia 
5 Crustacea 
a? frog i 7 
$ haddock ‘ 
$9 Helix . , 
a5 Insects . 
<5 Limulus F 
‘5 Lizards ‘ 
‘5 Myxine 
+ Peripatus. 
a5 Petromyzon . 
ay pigeon . : 
‘is rabbit . . 
ay scorpion ‘ 
~~ sea-urchin 
55 Sepia . : 
i” skate i. 
ee spider . 
19 starfish . . 
ee Tracheata * 
33 Vertebrates . 
Retia mirabilia of Cetacea 
es of Sirenia 
Reticulum _ . ‘ 
Retina . : : - 
Retinula zi . . 
Reversion . . . 
Rhabdites 7 . 
Rhabdoceelida . i 
Rhabdom . . é 
Rhabdonema a . 
Rhabdopleura. . 
INDEX 
PAGE 
se Demphorhynalus . : 
513 | Rhea . é . . 
610 | Rhinoceros . . F . 
612 | Rhinoderma. . : . 
642 | Rhinolophus f E : 
644 | Rhizocrinus . q . . 
646 | Rhizopoda F * . 
29 | Rhomboidal sinus. : . 
Rhopalura_. 5 A 
372 Rhynchobdellidee . : 
463 | Rhynchocephalia . . 
-398 | Rhynchota . : 
227 | Rhytina . 
446 Ribs of Vertebrates e 
437 | Rock-dove . . 
337 | Rodentia . . : . 
330 | Roe-deer ‘ 
291 | Rorqual . 
640 | Rostrum of crayfish 
313 | Rotatoria=Rotifers . . 
596 | Rudimentary organs . 309, 
556 | Rumen i . . 
388 | Ruminants . 2 
345 | Rumination , F . 
376 : 
627 | SABELLARIA & . Fé 
519 | Saccocirrus . : . é 
320 | Sacculina : . . 
525 | Sacculusofear . ‘ ‘ 
671 3 rotundus. a # 
715 | Sacrum . . 
366 | Sagitta . , : 
267 | Salamander . . . . 
408 | Salinella ‘ . . . 
543 | Saliva . . 
369 | Salivary glands of ant- eaters . 
259 7 3, of cockroach, 
318 55 », Of Collocalia . 
508 . » Of Felix - 
768 a8 » of Hirudo . 
752 33 », Of Insects , 
758 re xy of rabbit 0 
497 | Salmon . i i . 
288 | Salpa . . . 
86 | Sarcolemma . : 
180 | Sarcoptes  . 
182 | Sauropsida, Ichthyopsida and 
288 Mammalia : 
205 | Saurure 5 3 
442 | Saw-flies 
