PROCEEDINGS 



OF 



THE ROYAL SOCIETY, 

 Series B. Vol. 79. No. B 534. 



BIOLOGICAL SCIENCES. 



CONTENTS. 



Page 

 Fatty Degeneration of the Blood. By S. G. SHATTOCK and L. S. 



DUDGEON 427 



Some Points in the Development of Ophiothrix fragilis. By E. W. MACBRIDE, 

 D.Sc, F.R.S., Strathcona Professor of Zoology in McGill University, 

 Montreal 44<> 



CROONIAN LECTURE— On the Structural Constituents of the Nucleus, 

 and their Relation to the Organisation of the Individual. By 

 J. BRETLAND FARMER, D.Sc, F.R.S 44<* 



On Certain Phenomena of Inactivation and of Inhibition exhibited by 

 Precipitin Antisera. By D. A. WELSH, M.A., B.Sc, M.D., Professor of 

 Pathology, and H. G. CHAPMAN, M.D., B.S., Demonstrator of 

 Physiology in the University of Sydney . . . . . .465 



Miadesmia membranacea, Bertrand ; a New Palaeozoic Lycopod with a 



Seed-like Structure. By M. BENSON, D.Sc, F.L.S. (Abstract) . . 473 



On the Identification of Chitin by its Physical Constants. By IGERNA 



B. J. SOLLAS, Fellow of Newnham College, Cambridge . . . 474 



The Inhibitory Action upon Subsequent Phagocytosis, exerted on Active 

 Normal Serum by Inactive Normal Serum through which Bacilli have 

 been passed. By J. C. G. LEDINGHAM, M.A., M.B. (Aberdeen), 

 Assistant Bacteriologist, Lister Institute ....... 482 



Contributions to our Knowledge of the Poison Plants of Western Australia. 

 By E. A. MANN, Government Analyst, and W. H. INCE, Ph.D., F.I.C. 

 (Abstract) ■ . 485 



Observations on the Life-history of Leucocytes. Part II. — On the Origin of 

 the Granules. By C. E. WALKER, Assistant- Director of the Cancer 

 Research Laboratories, University of Liverpool. (Plate 5) . . .491 



Observations on the Life-history of Leucocytes. — Part III. By 



C. E. WALKER, Assistant- Director, Cancer Research Laboratories, 

 University of Liverpool. (Plate 6) 495 



The Time taken in passing the Synapse in the Spinal Cord of the Frog. By 

 FLORENCE BUCHANAN, D.Sc, Fellow of University College, London. 

 (Abstract) 503 



A Preliminary Summary of the Results of the Experimental Treatment of 

 Trypanosomiasis in Rats. By H. G. PLIMMER, F.L.S., and J. D. 

 THOMSON, M.B., CM 5<>5 



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