948 



1 NDEX 



8&PTW&ANOHIA, sep'tibrang'kia (L. 

 septum,, partition -j- G. bra-ngchia, 



gills) . 421 



An order of Pelecypoda. 



SEPTIC, definition of 192 



SEPTUM, sepp'tum (L. fence, wall) 



Interbranchial 758 



Oblique 756 



Pellucidum Xl,2 



Transversum, definition of 756 



SERIAL HOMOLOGY, se'rial (F. 



seriel, serial ) 316 



SEROSA IN INSECTA, seerow'sah (L. 



serum, serum ) , definition of 346 



SEROUS GLANDS, se'rus gland (L. 

 serum,, serum + glans, an acorn ) , 



definition of 742 



8 E RRAN U 8, sera'nus (L. serra, a 



saw ) 824 



SERRATUS, sera'tiis (L. serra, saw), 



80. 829 



SERTOLI 



Foot or sustentacular cells of. 520. 811 

 (See also testes.) 



SERUM, se'rum (L. serum, serum) . . 62 

 SESAMOLD BONES, sess'amoid (G. 

 sesamon, a plant, referring to the 



shape of the seeds ) 828 



SESSILE, ses'il (L. sedere, to sit)... 205 

 SETAE, se'te (L. seta, bristle) 259, 283 



SEVERINUS 371) 



SEX-LINKAGE, seks ling'kaj (L. 

 sexus, sex -f lingula, a small tongue 

 from ligare to bind), definition of . . . 168 

 SEXUAL REPRODUCTION, sek'sual 

 reproduk'shun, in Vaucheria (L. 

 sexus. sex -f- re, again -f- producere, 



to bring forth) 207 



SEYMOUR! A 694 



SHANK, shangk (A. S. scanca, bone 



of leg), definition of 45, 84, 708 



SHARK-SUCKER 645 



SHELL-GLANDS, shel glands (A. S. 



schell, shell + L, glans, an acorn) .816 

 SHOCK, ANAPHYLACTIC, definition 



of, see anaphylactic 201 



SHORT-HORNED GRASSHOPPER. . .352 

 SHREW, shru (A. S. scrcwa, a wicked 



person, a shrew-mouse) 658 



SIEVE TUBES, siv (A. S. siefe), defi- 

 nition of 230, 235 



SIGMOID FLEXURE, sig'moid flek- 

 shur (G. E. sigma, -f- eidos, shape, 



-f L. flexus, the bending) 748 



SILICA, si'lika (L. silex, flint) 93 



SILUROIDS, silu'roids (G. silouros, 

 a river fish) 761 



SIMIA SATYRUS, sim'ia (L. simia, 

 an ape ) 660 



SIMPLEX UTERUS, sim'pleks (L. 



, simple), definition of 819 



SINUS, sigh'nus (L. sinus, curve) . . . .284 



Rhomboid, definition of 475 



Terminalis, definition of 467 



Venosus 55, 58, 501 



SINUSOID, sm'usoid (L. sinus, curve 

 + eidos, shape ) 795 



S1PHONOGLYPHAE, sifonoglif'e (G. 

 siphon, tube + ylyphein, to en- 

 grave) 256 



SIPHONOPHORA 255, 419 



8IPHUNCULATA, slfungkula'ta (L. 



siphunculus, a small tube) 423 



An order of Pterygoge-nea. 



SIPHUNGULOIDEA, sifunkuloid'ia 

 (L. siphunculus, a small tube -f- G. 

 eidos, shape), definition of 311 



SIPHUNCULUS NUDUS, sifun'kulus 

 niidus (L. siphunculus, a small tube 

 + nudus, naked) 311 



SIREN LACERTINA 6S,9 



SIRENIA, sire'nia (L. siren, a siren 



or mermaid) 426 



Herbivorous, educabilian, placen- 

 ta! mammals, having the body fish- 

 like in form with the hind limbs and 

 pelvis more or less atrophied, and the 

 body ending in a horizontal expan 

 sive tail. 



Definition of 662 



SIRENIDAE 650 



SKATES, skats (probably L. squatus, 

 a kind of shark) .641, 642 



SKEINS, skans (Ir. Gael, again, 

 split) ? :. 99 



SKELETOGENOUS SHEATH, skell' 

 etoj'eenous (G. skeleton, from skello, 

 make dry ) 612 



SKELETON, INTERNAL, skel'eton 

 (G. skeletos, dried, hard) 4(i 



SKULL, skill (M. K. xkullr, the era 

 nium) 73 



SKULL 



Development of Wi) 



Of reptile 692 



Representative types of 694 



SLOTH, sloth (A. S. slaw, slow) 659 



SNAKES, snaks (A. S. snaca, creeper). 651 



Definition of 654 



Skull of 692 



SOCIOLOGY, sosiol'Oji ( L. socius, 

 companion -}- G. logos, discourse) ... 32 



SOL 148 



SOLAR PLEXUS, soh'lar (L. sol, the 



sun; plexus, interweaving), definition 

 of 878 



SOLIFUGAE, solif'uje (L. sol, sun + 



fugere, to flee ) 422 



An order of Lipoctena. 



SOMATIC LAYER, sohmat'ik (G. 



som, body), definition of . .259 



