QUEKETT MICROSCOPICAL CLUB. 359 



the minutes of the meeting held on March 14:th were read and 

 confirmed, 



Messrs. Kenneth J. Lucian Boxwell, W. T. C. Groulden, Royden 

 Cobden Wale, M.Sc, Thomas W. Bray, James Sarvent and 

 Edward Earle were balloted for and duly elected members of the 

 Club. One nomination was read for the first time. 



The Secretary announced that at the meeting on May 9th Mr, 

 Cuzner would give " A Short Account of Some Varieties of Marine 

 Zoology." The Hon. Secretary then read a " Note on Glycerin 

 as a Mounting Medium," by Mr. E. D. Evens. Mr. Evens dealt 

 with the alleged solvent action of glycerin on calcareous struc- 

 tures. The point is mentioned in the 1901 edition of Carpenter's 

 book, and seems to have been copied from one book to another 

 without verification. Mr. Evens has found no evidence of any 

 solvent action. He thinks that possibly the glycerin in use in 

 Dr. Carpenter's early days may have been acid, as it was not so 

 pure as that prepared by modern methods. Mr. Evens gave 

 examples of various calcareous objects that he had himself 

 mounted in glycerin, and which so far appeared unaffected. He 

 said that if a minute amount of precipitated chalk was added to 

 glycerin, sufficient to make it opalescent, the mixture might be 

 boiled without the milkiness disappearing, as it would do if solu- 

 tion took place. Mr. Evens thought the matter was worthy of 

 further investigation on account of the value of glycerin as a 

 mounting medium. 



A short note by Mr. Nelson on " A Dark- ground Stop for Pond- 

 Life " was then read. Mr. Nelson said that in some cases, when 

 examining pond-life with dark-ground illumination, the image 

 of the spider carrjdng the dark-ground stops appeared in the 

 bodies of flagellates, etc. This trouble, which does not occur with 

 balsam-mounted diatoms, may be satisfactorily overcome by using 

 a glass disk instead of the wire spider, having a central hole into 

 which is fitted a pin, or stops may be used consisting of glass 

 disks having black patches painted on them by means of a 

 turntable. 



The Hon. Secretary announced that the club had received a 

 very valuable gift from the father of a late member of the Club, 

 Mr. B. Tryon. It was Mr. Tryon's wish that his microscopical 

 apparatus should become the property of the Club. The gift 

 consists of two microscopes and a quantity of apparatus, including 



JouRN. Q. M. C, Series II.— No. 88. 25 



