1V 
; Research Student, Lister Institute of Preventive Medicine. Communicated by 
Dr€. Je Martin, ERIS? (lsctastdaccs saesete detec neeac sadn cei cece eter eae eae eta 
Two Cases of Trichromic Vision. By F. W. Edridge-Green, M.D., F.R.C.S. Com- 
municated by Dr. FW. MottFUR:S. s.ct:.0s s0% caeeeenes ten cece nese eee eee eee 
The Colour-Physiology of the Higher Crustacea, Part III. By Frederick Keeble, 
M.A., University College, Reading, and F. W. Gamble, D.Sc., Zoological 
Department, Victoria University, Manchester. Communicated by Professor 
Sydney J. Hickson, F.R-S. (A bstract)..02....20.sesccueeeecnscen-aescnnaes chee eee 
On Colour-Vision by Very Weak Light. By George J. Burch, M.A., D.Sc. Oxon. ; 
F.R.S. ; Lecturer in Physics, University College, Reading .........:.......+5-0-asree 
No. B 509.—June 28, 1905. 
On the Nature of the Silver Reaction in Animal and Vegetable Tissues. By A. B. 
Macallum, M.A., M.B., Ph.D., Professor of Physiology in the University of 
Toronto. Communicated by W. 'D.:HalliburtonjHh:s. “ei.c.02.<s0-e ee eee 
On the Resemblances existing between the ‘ Plimmer’s Bodies” of Malignant 
Growths, and Certain Normal Constituents of Reproductive Cells of Animals. 
By J. Bretland Farmer, F.R.S., J. E. 8. Moore, and C. E. Walker................ 
Observations on the Brains of Men and Animals infected with Various Forms of 
Trypanosomes. Preliminary Note. By F. W. Mott, M.D., F.B.S. ............0 
Ona) New Rhabdosphere. By Georee Murray, RsS.1..cec nee occnc eee eee eee eee 
On some New Species of Lagenestoma, a Type of Pteridospermous Seed from the 
Coal Measures. By E. A. Newell Arber, M.A., F.LS., F.G.8., Trinity College, 
Cambridge, University Demonstrator in Paleobotany. Communicated by 
DOS Scott, KORS. -CBlates vamd:2)iinrcasntavcesceec etree aioe see eee Renee 
Ovulation and Degeneration of Ova in the Rabbit. By Walter Heape, M.A., 
Trinity College, Cambridge. Communicated by Adam Sedgwick, F.R.S.......... 
On Reciprocal Innervation of Antagonistic Muscles.—EHighth Note. By C. 8. 
sherrmotons DSc. WAR Sic sc cccck tee .<tdiaeteeosasasedererenecstiosk eters +c ste eee eee 
No. B 510.—August 3, 1905. 
On the Dimorphism of the English Species of Wummudlites, and the Size of the 
Megalosphere in Relation to that of the Microspheric and Megalospheric Tests 
in this Genus. By J. J. Lister, M.A., F.R.S., Fellow of St. John’s College 
and Demonstrator of Comparative Anatomy in the University of Cambridge. 
QB lates Bb ) ie Ges was. eit oa sta vere cutee evles oe BM tome gre a's sis ie's vegetations sone ele oe See eee eee 
On the Occurrence of Anopheles (Myzomyia) Lastoni in Calcutta. By J. R. Adie, 
M.B. (Lond.), Major, I.M.S., and A. Alcock, M.B., LL.D., F.R.S., Major, I.M.8. 
The Structure and Function of Nerve-Fibres.—Preliminary Communication. By 
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J. 8. Macdonald, Professor of Physiology in the University College, Sheffield. - 
Communicated iby Protessor CaS .shernmneton, Ey his. nese ceeret eee ee eee 
On the Effect of Carbon Dioxide on Geotropic Curvature of the Roots of Prswm 
sativum, L. By Eric Drabble, D.Sc., F.L.S. (Demonstrator in Botany, Royal 
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