CONTENTS 
Nori, JULY 
Maruitpe M. Lance. On the regeneration and finer structure of the arms 
of the cephalopods. Thirty-nine figures (eight plates).................. 1 
W. H. TautarerRo. Reactions to light in Planaria maculata, with special 
reference to the function and structure of the eyes. Eighteen figures.. 59 
S. R. Detwiter. Experiments on the transplantation of limbs in Amblys- 
toma. The formation of nerve plexuses and the function of the limbs. 
MewvieIity=tWO rll UTESs..sg: crass .lh a fakes oe she Seas uGsete NO. say AARERE woae sale 
No; 25 AUGUSE 
M. F. Guyer anp E. A. SmitH. Studies on cytolysins. Il. Transmission 
of induced eye defects. Seven figures and four plates.................. 171 
Georce H. BisHorp. Fertilization in the honey-bee. I. The male sexual 
organs: their histological structure and physiological functioning. 
ineewexturounesandeuhneenplavest=ne sas. wneeee ae aac sas 225 
GerorGceE H. BisHop. Fertilization in the honey-bee. II. Disposal of the 
sexual fluids in the organs of the female. Two text figures............. 267 
Gary N. Cauxins. Uroleptus mobilis Engelm. III. A study in vitality. 
OneschartanGktwordlaenamsia aan vem eeneeie aor cient Graco ccs 287 
No. 3. OCTOBER 
C. C. Lirrnte. Factors influencing the growth of a transplantable tumor in 
TOS, ALO) Cheer ONS BNC Ose WANK s. oocccensounaccocoMMesoasuuoucaonen 307 
Epwarp F. Apotex. Egg-laying reactions in the pomace fly, Drosophila... 327 
G. H. Parker. Activities of colonial animals. I. Circulation of water in 
Renilla. One text figure and one plate (four figures)................... 343 
No. 4. NOVEMBER 
J. M. D. Outmsrev. The results of cutting the seventh cranial nerve in 
Amiurus nebulosus (Lesueur). Four plates (twenty-six figures)........ 369 
GustaFr Fr. GOrHitINn. Experimental studies on primary inhibition of the 
cilvaryamovementun croc cuCUmMiIsyas-— 40ers oeee en eee to ae 403 
H. J. Mutuer. Further changes in the white-eye series of Drosophila and 
their bearing on the manner of occurrence of mutation. Three figures. 443 
G. H. Parker. Activities of colonial animals. II. Neuromuscular move- 
ments and phosphorescence in Renilla. Twelve text figures and one 
jolEe (Suet METER) Bae tere nee stot oles aol ate Oh oe ie OU SPIO Cioran ate 475 
