Vlil CONTENTS. 



Summary of Current Kesearches relating to Zoology and Botany (princi- 

 pally Invertebrata and Cryptogamia), Microscopy, &c., including 

 Original Communications from Fellows and Others.* 



40. 208, 399, 574, 764, 934 



ZOOLOGY. > 



A. — Vertebrata : — Embryology, Histology, and General. 



a. Embryology. 



PAGE 



Eyder, J. A. — The ArcMstome Theory Parti 40 



Wiedersperg, G. v. — Development of Spermatozoa ^^ 41 



BiONDi, D. — Spermatogenesis .. .. .. ^ 42 



Dewitz, J. — Mechanism of Fertilization . . . . ^^ 43 



Haddon, a. C. — Blastodermic Vesicle of Mammals ^ 43 



Sutton, J. B. — Hypertrop>hy and its value in Evolution ^^ 44 



Eyder, J. A. — Availability of Emhryological Characters in the Classifica- 

 tion of the Chordata „ 4i 



Stolzmann, J. — Sexual Dimorphism , 45 



La Valette St. George, v. — Spermatogenesis of Bomhinator .... „ 45 



Yung, E. — Influence of Saline Water on the Development of Tadpoles .. „ 45 

 „ „ Influence of the Number of Individuals in One Vase, and of 



the Form of tlie Vase on the Development of Tadpoles .. .. .. ,j 46 



Cunningham, J. T. — Eelations of Yolk to Gastrula in Teleosteans ., ,, 46 



McIntosh, W. C. — Ova of Callionymus lyra ^^ 46 



,j „ -Structures resemUinj Ova.. .. ' ^ 47 



Preyer, W.— Special Physiology of the Embryo Part 2 208 



.FoL, H. — Tail in Human Embryo ,, 209 



Bet^da, C— Spermatogenesis in Mammals ^^ 209 



Beddard, F. E. — Ovary of Echidna ,^ 210 



Dare&TE, C. — Influence of Shochs on the Germs of the Fowl's Egg .. „ 210 



FiSCHEL, W. — Peptone in Hens' Eggs duriiig Incubation ^^ 210 



Heuos-'Roy-e-R— Spawning of Bufo vulgaris ,, 211 



Solger, B. — Yolk-globules in the intracapsular fluid of Fish-ora .. .. „ 211 

 Shipley, A. E. — Formation of Mesoblust and Persistence of Blastopore 



in the Lamprey ,, 212 



Day, F. — Breeding of Salmon from Parents which have never visited the 



Sea „ 212 



B.\'-DEn, J. A.— Hatching the Eggs of Cod „ 212 



Hertwig, O. & E. — Conditions of Bastard Fertilization „ 213 



Weismann, a. — Continuity of the Germ-plasniia considered as the basis 



of a theory of Heredity „ 213 



Morris, C. — Attack and Defence as Agents in Animal Evolution .. .. „ 214 



Eyder, J. A. — Origin of the Amnion Part 3 399 



Bambekb, C. TAN— Germma? Vesicle „ 399 



Heape, W. — Development of the Mole „ 400 



GuLDBERG, G. A. — Ovary of Echidna „ 401 



Warynski, S. — Monstrosities vjith Double-hearts „ 401 



* In order to make the classification complete, (1) the papers printed in the 

 ' Transactions,' (2) the abstracts of tlie ' Bibliography,' and (3) the notes printed 

 in the 'Proceedings' are included liere. 



