266 PROCEEDINGS OF THE SOCIETY. 



the case of glass tubes which were transparent to ultra-violet rays, was to 

 use a screen of a solution of sulphate of quinine between the light and 

 the Microscope, which completely absorbed all these rays. 



Mr. C. L. Curties exhibited a number of slides under Microscopes in 

 the room, illustrative of the stages in the life-history of the Culicidaj ; 

 the labels attached to each were, he thought, sufficiently explicit to render 

 it unnecessary for him to further describe them. 



Votes of thanks to Mr. Barnard and to Mr. Curties for their exhibits 

 were unanimously passed. 



Attention was called to some excellent stereo-photographs sent for 

 exhibition by Mr. Dollman, and placed upon the table, with stereoscopes, 

 for the inspection of the Fellows present. 



Mr. E. M. Nelson's paper on " Eye-pieces for the Microscope " was 

 taken as read, the greater part of it consisting of numerical tables which, 

 though of considerable value, it was thought would prove uninteresting 

 reading. The paper would, however, be printed in the Journal. 



The thanks of the Society were voted to Mr. Nelson for his paper. 



The Rev. Eustace Tozer read a paper on " The Life-history of a new 

 Protophyte," which he illustrated by six lantern slides, and by living and 

 mounted specimens under Microscopes, showing the various methods of 

 reproduction. He also exhibited micro-slides of Rotifers, stained and 

 mounted in Canada balsam by a new process. 



The thanks of the Meeting were voted to the author. 



Mr. F. Chapman's paper, " On Dimorphism in the Recent Forami- 

 nifer, Alveolina boscii" was read by Dr. Hebb, specimens in illustration 

 being exhibited under the Microscope. 



Mr. Earland said that he had examined Mr. Chapman's specimens, and 

 was under the impression that he had observed similar ones on several 

 occasions, when examining dredgings in which Alveolina boscii was 

 plentiful. It had never occurred to him, however, that the variation 

 might be due to dimorphism, he had always regarded it as an abnormal 

 variation. Such questions could only be answered, in the majority of 

 species, by the cutting of thin sections through the median line, a process 

 requiring the greatest skill and delicacy of touch. He had often tried, 

 but very rarely succeeded in the operation. Mr. Chapman was well 

 known for his skill in these matters, and he was to be congratulated 

 on the interesting discovery resulting from his work. 



A vote of thanks to Mr. Chapman for his paper was unanimously 

 passed. 



