158 PROCEEDINGS OF THE SOCIETY. 



Mr. H. J. Waddington : 



Lactate of copper and copper deposited by electrolysis. 

 Mr. J. G. Walker : 



An undescribed British sponge ; parasitic and coating. It has a 

 new form of spicule sparsely distributed on membranes. 

 Mr. F. H. Ward : 



Sections of Oycas revoluta, and dahlia root showing inulin. 

 Mr. T. Charters White : 



Teeth of blow-fly, and the valve of salivary duct of blow-fly. 



Meetings of 10th January, 1883, at King's College, Strand, W.C, 

 The President (Professor P. Martin Duncan, F.E.S.) in 

 THE Chair. 



The Minutes of the Meeting of 13th December last were read and 

 confirmed, and were signed by the President. 



The List of Donations (exclusive of exchanges) received since 

 the last meeting was submitted, and the thanks of the Society given 

 to the donors. 



From 

 Fromentel, E.de. — Introduction a I'etude des Polypiers fossiles. 



357 pp. (8vo. Paris, 185«-61.) 

 Klencke, P. F. H. — Ueber die Contagiosiiat der Einge- 



weidewiirnier nach Yersucheu nnd iiber das physiologisclie 



und pathologische Lebeu der mikroskopisclien Zellen 



nach erapirischen Tliatsachen. iv. and 42 pp. (8vo. 



Jena, 1844.) 

 Ziegler, M. — Lutte pour I'existence entre Forganisme animal 



et les Algues microscopiques. iv. and 80 pp. (8vo. 



Paris, N.D.) 

 And 9 reprints on IMilk, Foramiaifera (6), Colouring Matter 



in Plant Cells, and AlgsB Mr. Crisp. 



Mason, J. J., M.D. — Minute Structure of tlie Central Nervous 



System of certain Reptiles and Batrachiaus of America. 



113 pLoto-micrographs, xxiv. pp. (Fol. Newport, U.S.A., 



1879-82) The Author. 



Slide of Bufjula turhinata, with tentacles extended and stained Mr. H. C. ChadwicL 



Special attention was called by the President to the volume 

 presented by Dr. Mason. 



Mr. Crisp exhibited (1) Mikulicz's Stomach Microscope and (2) 

 Crouch's Portable Histological Microscope. 



Mr. J. D. Hardy read a note on a method of illumination by 

 means of the Chromatoscope (see p. 126). 



Mr. Stewart said that no doubt most of the Fellows who were 

 present at their last Conversazione saw this apparatus exhibited and 

 observed that it did most efficiently add to the beauty of objects 

 shown, which were not amenable to the action of the polariscope. It 

 was not demonstrated, however, that it enabled any one to find out 

 the structure of objects better, though it certainly added to their 

 beauty. 



The President said that several of the Fellows had been in the 



