70 



March 22nd, 1878. — Ordinary Meeting. 

 Dr. J. Matthews, F.R.M.S., Vice-President, in the Chair. 



The minutes of the preceding meeting were read and confirmed. 



The following gentlemen were balloted for and duly elected members of 



the Club : — The Ven. Archdeacon Darby and Mr. E. Darke. 



The following Donations to the Club were announced : — 



"The Journal of the Eoyal Microscopical") „ _, . 



_,.,„ > from the Society. 



Society" ) J 



" The American Journal of Microscopy "... ,, the Publisher. 



" Science Gossip " ... ... ... ... ,, „ 



" Annual Eeport of the Geologists' Asso 



the Association, 

 ciation 



■} 



> „ the Society. 



" Proceedings of the Belgian Microsco- 

 . pical Society " 



"The Analyst" , the Publisher. 



" The Medical Examiner " (weekly) ... „ ,, 



" Eeprint of a Paper on Melicerta " ... „ Mr. F. A. Bedwell. 



" The American Naturalist " ... ... in exchange. 



"Annals of Natui'al History'' ... ...by purchase. 



Six Specimens of " Solid'' Insect Mounting... from Mr. Curties. 

 Two Slides • ... ... ... ... ... „ Mr. Glasspoole. 



Seven Slides of Polyzoa ... ... ... „ Mr. Michael. 



Twenty-two Slides of Sections ... ... ,, Mr. Newton. 



The thanks of the meeting were unanimously voted to the Donors. 

 The Secretary exhibited and described a new form of air pump for 

 microscopical mounting purposes, devised by Mr. Edmund Gardner, and 

 carried out by Mr. Browning. Two patterns of the instrument were 

 shown, the simpler of which consisted of a glass tube cemented to the 

 exhausting syringe at one end, and closed at the other by a screw cap 

 rendered air tight by means of an india-rubber washer. The slide to be 

 operated upon was placed in the tube, and the effect produced by the 

 exhaustion of the air could be readily observed. A more elaborate form of 

 the apparatus was also placed upon the table. 



The Chairman said that the great difficulty with regard to the ordinary 

 form of air pump was in keeping the receiver air tight, but by the use of 

 vulcanised rubber, the vacuum in the little instrument before them could be 

 easily maintained. 



Mr. Thos. Spencer enquired if anything was known as to the cost of 

 these instruments ? 



The Secretary had not been informed, but he believed it would be 

 certainly less than that of most of the usual forms, on account of its 

 extremely simple character. 



A paper by Mr George J. Burch, of Cheshunt College, "On a New 

 Micrometer," was read by Mr. Curties, the subject being illustrated by 

 diagrams, and by the exhibition of several forms of the apparatus 

 described. Mr. Curties, at the conclusion of the paper, expressed his inten- 



