40 Moll 
VIII. Mollusca. 
[1907] 
Pigments ; presence of tyrosinase in 
tissues and unpigmented eggs of Cepha- 
lopoda; Weindl, 719. 
Alimentary System. 
Digestive gland, summaiy of recent 
work ; Cu6not, 163, 
Digestive secretion, Helix pomatia ; 
Giaja, 279. 
Digestive secretion, Cephalopoda ; 
Sellier, 583. 
Digestion of xylane, Helix pomatia ; 
Seillifcre, 579. 
Absorptive function digestive gland, 
Cophalopoda ; Cu4not, 163. 
Circulatory and Respiratory 
Systems. 
Circulatory system, Pecten ; Drew, 222, 
Circulation, Trochus, etc. ; Fleure & 
Gettings, 246. 
Blood-serum, retards coagulation of 
milk by rennet ; Sellier, 581, 
Biedermann’s crystals from blood- 
fluid ; Btttschli, 97. 
Respiration, role of manganese ; 
Bradley, 86. 
Excretory System. 
Digestive gland, Cephalopoda ; Cu6not, 
163. 
Nitro-metabolism, presence of urea; 
Sanzo, 556. 
Tegmental Glands. 
Hypobranchial gland, Prosobranchia ; 
Simroth, 596 p. 968. 
Secretion of hypobranchial gland, 
Purpura ; Roaf & Nierenstein, 541. 
Purpurine ; Dubois, 226. 
Nervous System. 
Pecten ; Drew, 222. 
Hofmann, 336, 337 ; Yung, 758. 
Sense-organs, etc. 
Sensation, Prosobranchia ; Simroth, 
596 p. 981. 
Eye, photo-irritability of iris, Octopus ; 
Nepveu, 456, 
Chromatophores, influence of light of 
different wave lengths, Loligo, Octopus , 
Sepiola ; Fuchs, 257 p. 522. 
Chromatophores, Cephalopoda ; Hof- 
mann, 337. 
Luminous organ, Histioteuthis ruppeli ; 
Roth, 550. 
“ Thermoscopic eye,” Oheiroteuthis 
bomplandi ; Roth, 550. 
Muscular System. 
Lamellibranchia, adductor muscle 
Pecten ; Marceau, 422, 423. 
Lamellibranchia, movements of shell- 
valves ; Marceau, 421. 
Cephalopoda, mantle and arm muscles ; 
Marceau, 423. 
Cephalopoda, mantle muscles Octopus, 
Sepia ; Marceau, 422. 
Reproductive System. 
Pulmonata, Helix ; Meisenheimer, 435. 
Cephalopoda, male organs ; Marchand, 
424. 
Shell. 
Sinus and siphon, Pleurotomariidae ; 
Dali, 175, p. 5. 
Environmental Effects. 
Silesian spp. ; Franz, 248. 
Prosobranchia ; Simroth, 596, 
Unionidae ; Sell, 580. 
Raj at & Peju, 514. 
Duration of Life. 
Planorbis ; DaU, 183. 
