iv CONTENTS 
NO. 5 OCTOBER 
J.B. Jounston. The cell masses in the forebrain of the turtle, Cistudo carolina. 
SSI? FEUER. SG Iare care 6 a cin eins eas arate Sin © scala ai nln 'e verb 6 TRV ERS nets tele a tea ae 393 
Davenport Hooxer. Studies on Regeneration in the spinal cord. I. An analysis of 
the processes leading to its reunion after it has been completely severed in frog 
embryos at the stage of closed neural folds. Eight figures........................ 469 
Wituiam H. F. Appison. On the rhinencephalon of Delphinus delphis, L. Fifteen 
ATPREUMER sce costo cid ons chadisles v0.0: peso wicdieiw oe ee aphakin = oGie eet ened AAG tee een 497 
NO. 6 DECEMBER 
L. 8. Ross. The trophospongium of the nerve cell of the crayfish (Cambarus). Eleven 
EUS 5 Fe a dg ed aver wesc gp cas yk Saliva sa be st cy eke Np re 523 
Lesuie B. Arey. The occurrence and the significance of photomechanical changes in 
the vertebrate retina—An historical survey. Four figures........................ 535 
Suinkisui Harar. On the brain weights of rats descended from the cross between the 
wild Norway (Mus norvegicus) and the domesticated albino (Mus norvegicus 
alpinus). “Two: charte.c: suc 5 cb les Bela ene re nee nei os er 555 
