iv contents. 



Proceedings, etc. page 



Proceedings from October 19th, 1900, to February loth, 1901, inclusive 85 

 Objects Exhibited, with Notes. August 17tb, 1900, to February 15th, 



1901 lOU 



Thirty-fifth Annual Report of the Committee (for 1900) . . .104 



Report of the Treasurer (for 1900) 108 



(A List of Members, a List of Exchanges, and a Copy of the Q. M. C. 



Rules were issued with this Part) i — xxvi 



PART No. 49, NOVEMBER 1901. 



Papers. 



W. B. Stokes. Images of Diatom Structure 109 



J. RHEiNBERCr, F.R.M.S. The Black and White Dot Phenomenon 



(Illustrated) 113 



G. Massee, F.L.S. The Laboulbeniaceae (Illustrated) , . . 119 



W. Wesche. a new male Rotifer, Metojndla salidus (Illustrated) . 123 



S. W. Smith, A.R.S.M. Microstructure of Metals and Alloys (Plate 7) 125 



A. Ashe. Two-speed Fine Adjustments (Illustrated) .... 131 

 D. J. Scourfield, F.R.M.S. Hydra and the Surface-film of Water 



(Plate 8) 137 



C. F. Rousselet, F.R.M.S. Triarthra hrachiata n. sp. (Plate 8) . 143 



Notes. 



C. F. Rousselet, F.R.M.S. Additional Note on Micro-Cements , 146 



G. Massee, F.L.S. A new theory as to the Origin of Potato Tubers . 147 



G. C. Karop, M.R.C.S. Red Rain Dust from Australia . . . 149 



J. Rheinberg, F.R.M.S. Double-Image Discs (Illustrated) . . 151 



R. T. Lewis, F.R.M.S. Further Note on Ixodes reduvius . . . 153 

 T. J. Davis. A new description of Forceps for holding Cover Glasses 



(Illustrated) 155 



M. Hartog, M.A., D.Sc. Method of Feeding of Phyllopods and 



Cladocera ........... 157 



The " Fred P. PULLAR Memorial Prizes " 159 



Reviews. 



Notices of Dallinger's eighth edition of Carpenter's " The Micro- 

 scope and its Revelations " ; "Das Tierreich — Lief. 3 Oribatidae, 

 Lief. 7 Demodicidae and Sarcoptidae, Lief. 13 Hydrachnidae 

 and Halacaridae " ; Newbigin's " Life by the Sea-Shore " ; 

 HanAusek's " Lehrbuch der technischen Mikroskopie " ; Koch's 

 " Die mikroskopische Analyse der Drogenpulver " ; Moeller's 

 " Leitfaden zu mikroskopisch-pharmakognostischen Ubungen " ; 

 and Weinschenk's " Anleitung zura Gebrauch des Polarisations- 

 mikroskops " Ifil 



