CONTENTS. 



TaANSAOTIONS OF THE SOCIKTT — ,A.ii 



VIII.— New British OniBATiDiE. By A. D. Michael, F.B.M.S., 



F.L.S., F.Z.S., &c. (riatcVII.) 385 



IX. Stuuctuhe of the Diatom Suell. Siliceous Films too tuin 



TO show a bboken edge. By Jacob D. Cox, LL.D., 



F.K.M.S 398 



\ On the STnucTTJBE AND Origin of Carboniferous Coal 



Seams. By Edward Wothorcd, F.R.M.S., F.G.S., F.C.8. 



(Plates VIII. and IX.) 40< 



SUMMARY OF CURRENT RESEARCHES. 



ZOOLOGY. 



A. GENERAL, including Embryology and Histology 

 of the Vertebrata. 



IjOKVf, O.— Protoplasm audits Powers of Resistance 421 



Hertwig, O. — Problem of Fertilization and of the Isolropy of the Ocum 421 



Eavhkr & Sachsse — Influence of external conditions 07i the developnent of Ova .. 423 



Beneden, E. VAN, & C. JuLiN. — Fatal Appendages of Mammals 423 



SoLGER, 15. — DevelopmeiU of the Ccelom and Ccelomic Epiihelium of Amphibia .. 423 



SiENCEUjW. 15. — Fate of the Blastopore of liana temporaria 425 



HESNEOtY, L. F. — Primitive Streak in Osseous Fishes 425 



VERHA.vBy.j'E.— Formation of Egg-shell in Dogfish 425 



Foh, 11.— Cdl-Continuity 426 



Hertwig, O. — Influence of Gravity on Cell-division ,. 426 



Hackel, E. — Origin and Development of A7iimal Tissues 426 



Apamkiewicz, A. — Parietal Cells in Nerve-fibres 428 



Woolubidge, L. C — Neio Constituent of the Blood and its Physiological Import .. 428 



NiKOLAiDES, B. — Phenoiiicna of Contraction in Striated Muscle 428 



Lewis, W. J. — Ilair Microscopically examined and Mcdico-legally cotisidered . . 429 



MacMunn, C. A. — New Organic Spectra 429 



SHAitP,B.— Homologies of the Vertebrate Crystalline Lens 430 



Brooks, W. K. — Recognition by Marine Animals of the Uour of the Day 431 



CijAVs' Elementary Text-booh of Zoology 431 



B. INVERTEBRATA. 



'SiEVlEC, J.— Morpliology of Suckers of Animals 431 



Verrilx., A. E. — New Coclenterates and Echiiioderms 432 



Zacuabias, O.— Fauna of the Pieces of Water of the Riesengebirge 433 



Potts, E. — Minute Fauna of Reservoirs 433 



MoUusca. 



RossLEB, R. — Eadula of CephalopJiorous Mdluscs 434 



HoYLE, W. B. — New ^ Challenger' Cephalopoda 435 



Nalepa, a.— Intercellular Spaces of Epithelium, and their significance in Pulmonate 



Mollusca 435 



SiMROTH, II. — Cyclostoma and Pomatias 436 



HoRST, 11. — Development of the Viviparous Edible Oyster 436 



M'Into.sh, W. C. — Reproduction of Mytilus edulis 437 



Fleisciuiann, A. — Movement of the Foot in Lamellibranchs 437 



Molluscoida. 



a. Tonicata. 



Macbice, 0. H., & ScHiJLGiN. — Devdopmcjit of Amaroecium pToliferum 437 



)3. Polyzoa. 



Vir.ELiUf", W. J. — Morphology of the Bryozoa 438 



Lbidy, J. — Urnatella gracilis 439 



IhnCKS/r.— New Polyzoa 439 



y. Brachiopoda. 



V'l.'.'CmiAJS'N, Y .—Brachiopoda 440 



