CONTENTS. 



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SERIES B. VOL. LXXVIII. 



No. B 522.— July 23, 1906. 



PAGE 



The Alieroseopic Changes in the Nervous System in a Case of Chronic Dourine or 

 Mai de Coit, and Comparison of the Same with those Found in Sleeping 

 Sickness. By F. W. Mott, M.D., F.E.S. (Plates 1—4) 1 



On the Physiological Action of a Recently-Discovered African Arrow Poison. 

 By Charles Bolton, M.D., Assistant Physician to University College Hospital. 

 Communicated by Professor Sidney Martin, F.R.S 13 



On the Origin of the Sertoli or Foot-cells of the Testis. By C. E. Walker, 

 Assistant-Director of Cancer Research Laboratories, University of Liverpool, 

 and Alice L. Embleton, B.Sc. Communicated by Dr. C. S. Sherrington, F.R.S. 



(Plates 5 and '6) 50 



Observations on the Life-History of Leucocytes. By C. E. Walker (Assistant- 

 Director of Cancer Research Laboratories, University of Liverpool). Com- 

 municated by C. S. Sherrington, F.R.S. (Plates 7 — 10) 53 



The Action on Bacteria of Electrical Discharges of High Potential and Rapid 

 Frequency. By Alexander G. R. Foulerton, F.R.C.S., and Alexander 

 M. Kellas, Ph.D. Communicated by Professor J. Rose Bradford, M.D., F.R.S. 60 



No. B 523— August 7, 1906. 



An Investigation into the Structure of the Lumbo-sacral-coccygeal Cord of the 

 Macaque Monkey (Macacus sfnicics). By Mabel Purefoy FitzGerald. Com- 

 municated by Professor Francis Gotch, M.A., D.Sc, F.R.S 88 



Cyauogenesis in Plants. Part IV. — The Occurrence of Phaseolunatiu in Common 

 Flax (Linum usitatissimum). By Wyndham R. Dunstan, M.A., LL.D., F.R.S., 

 T. A. Henry, D.Sc, Principal Assistant in the Scientific and Technical 

 Department of the Imperial Institute, and S. J. M. Auld, Ph.D 145 



Cyauogenesis in Plants. Part V. — The Occurrence of Phaseolunatiu in Cassava 

 (Manihot Aipi and Manihot utilissima). By Wyndham R. Dunstan, M.A., 

 LL.D., F.R.S., T. A. Henry, D.Sc, Principal Assistant in the Scientific and 

 Technical Department of the Imperial Institute, and S. J. M. Auld, Ph.D 152 



The Action of Anaesthetics on Living Tissues. Part II. — The Frog's Skin. By 



N. H. Alcock, M.D. Communicated by A. D. Waller, M.D., F.R.S 159 



a 2 



