VI II CONTENTS. 



NOTES. 



I'AGK 



A Two-speed Fine Adjustment. By Edward M. Nelson. (Fig. 2) 19 



An Old Non-Achromatic Simple Microscope. By Edward M. Nelson. (Figs. 



143-148) 587 



An Early Compound Microscope with a Mirror attached to its Limb. By Edward 



M. Nelson. (Fig. 149) 590 



An Improved Horseshoe Stage. By Edward M. Nelson. (Figs. 150 and 151) .. 591 



OBITUARY. 



James Glaisher, F.R.S. F.R.A.S. F.R. Met. S. F.R.M.S 158 



Rev. Thomas Wiltshire, M.A. D.Sc. F.L.S. F.G.S. F.R.A.S. F.R.M.S 159 



SUMMARY OF CURRENT RESEARCHES 



Relating to Zoology and Botany (principally Invertebrate and 

 Cryptogamia), Microscopy, &c, including Original Communications 

 1-kom Fellows and Others.* 21, 1(30. 281. 483, 593, 705 



ZOOLOGY. 

 VERTEBRATA. 



a. Embryology. 



Delage, Yves — Carbonic Acid as a Provocative of Artificial Parthenogenesis .. 21 



,, „ Agency of Carbon Dioxide in Inducing Artificial Parthenogenesis 21 



Yiguier, C. — Artificial Parthenogenesis 22 



Charrin, A., & others — Reappearance in Offspring of Lesions Artificially induced 



in the Mother 22 



Winiwarter, Hans von — Note on Oogenesis in Mammals 22 



Buhler, A. — Retrogressive Changes in Ovarian Follicle of Amphibians 22 



Beard, John — Germ- Cells and Germinal Continuity 22 



Loisel, G. — Spermatogenesis in Sparrow 2:; 



Meves, F. I!. — Dimorphism of SpermatozMi 23 



Korff, K. von — Spermatogenesis in Phalangista vidpina 24 



Torrey, H. B. — Prepotency in Polydactylous Cats 24 



Dean, Bashford — Biometric Evidence bearing on Theory of Limb-Origin .. .. 24 



Simon, L. — Notes on Development and Structure of Bradypus .. .. 24 



Rabl, Carl — Development of External Body-Form 24 



Thilo, O. — Skeletal Changes in Fiat-Fishes in the Course of Development .. .. 25 



Moser, Fanny — Development of Vertebrate Lung • . . 25 



Eigenmann, Carl H. — Solution of the Eel Question . 25 



Hertwig, 0. — Treatise on Comparative and Experimental Embryology of Vertebrates 100 



( zermak, N. — Fertilisation in Salmon '. . ' 160 



Wedekind, W. — Vestigial Function 160 



Houssay, F. — Organic Sexual Dimorphism in Foicls 160 



Weismann, August — Regeneration in Neicts 161 



Weber, A. — Torsion of Bird-Embryo 161 



K In order to make the Contents complete, the papers printed in the ' Transactions ' 

 and the Notes printed in the 'Proceedings' are included here. 



