The Microscope. 



17 



employed is very simple. After wrapping the frog in a moist 

 cloth and laying it on the plate, the binding-cord is passed back 

 and forth over the plate and around the pins, and its free end 

 is secured by simply drawing it under one of the small spring-clips 

 shown on the edge of the plate. The threads which stretch the web 

 are looped over the toe-nails and secured in the same manner. The 

 long springs shown in the cut hold the plate securely on any stage. 



The New Model Microtome. — The advantages claimed for this 

 microtome are that it can be used either for imbedding specimens 

 for section cutting, or, as in 

 the case of most vegetable and 

 many firm tissues, securely 

 clamping them. When it is 

 desired to imbed, the clamp 

 is lowered by the screw, and 

 the cap fitted in to protect it 

 from the embedding material. 

 The clamp, when used, will 

 be found very effective, grasp- 

 ing the specimen evenly and 

 firmly. The finish and get- 

 up of the instrument are 

 perfect in detail. The stage 

 is of darkened glass, and the 

 metal portions of brass finish. 

 A micrometer screw is at- 

 tached, thus allowing one to 

 obtain sections of any desired 

 thickness. A thoroughly satisfactory instrument. It is manufac- 

 tured by James W. Queen & Co. 



WHEN EMBEDDINO 



PROCEEDINGS OF SOCIETIES. 



THE SAN FRANCISCO MICROSCOPICAL SOCIETY. 



October 16, 1886. 



'' I ^HE annual reception tendered by the San Francisco Micro- 

 -^ scopical Society to its friends at Pioneer Hall Saturday even- 

 ing, proved to be a most enjoyable affair. Long lines of tables were 

 ranged along three sides of the hall and on the platform. On these 

 were placed forty-five microscopes (the largest number ever exhibited 



