The Microscope. 27;^ 



THE WORKING SESSION 



"was held at the chapel, the several alcoves of the room gave ample 

 and convenient space for the various demonstrations of tecnique. 

 The work of arranging the session devolved upon Prof. Kellicott, he 

 being the only member of the committee present. With his duties 

 as Secretary of the society, he was overburdened. 



The time allotted to the session, from 2 to 4 p. m., was too 

 short. The proper study of methods demands a few hours, some- 

 thing more than a hasty glance and a question, to be of value, more 

 time should be given for a deliberate exposition of the details. 

 Several exhibitors, who brought complicated apparatus, hardly had 

 it arranged in working order before the members were called away 

 by the reception committee. This is too important a feature of the 

 meetings to be slighted, and the committee having it in charge in 

 the future should look to it that nothing encroaches upon its allotted 

 time. Still, some excellent practical demonstrations were made. 

 Messrs. H. R. Spencer and E. K. Buttles showed the method of col- 

 lar correction for immersion objectives, and the measui'ement of the 

 angle of aperture of objectives. Dr. Frank L. James gave lessons 

 in the care of microtome knives, and tried to teach his audience to 

 prepare glycerine mounts, after -his own perfect manner. Professor 

 Simon H. Gage demonstrated a method of preparing areolar tissue. 

 Mr. Charles Wellington and Mrs. Wellington cut, ground and 

 mounted favorite hamiltonia, etc. J. J. B. Hatfield cut, stained and 

 mounted vegetable sections. Dr. R. H. Ward illustrated his method 

 of erecting the image in binocular microscopes. Dr. L. D. Mcin- 

 tosh showed his solar apparatus, and his electric light for use with 

 the microscope. Drs. W. P. Manton and C. G. Jennings demon- 

 strated the methods of embryological research with the incubator 

 oven, etc., from The Microscope laboratory. 



Dr. James E. Reeves, assisted by Miss M. A. Spink, imbedded 

 specimens by the interstitial method and revealed the secrets of his 

 beautiful mounts. 



Mr. W. A. Drescher cut imbedded and frozen sections with the 

 Bausch and Lomb microtome. 



Mr. C. M. Vorce revealed the sophistications of some food 

 products. 



Prof. W. H. Seaman demonstrated the method of producing 

 crystallization of chemicals. 



Mr. R. N. Reynolds, Mr. Frank F. Colwell and Mr. J. H. 

 Logan demonstrated various methods of mounting. 



