Tur Microscopr. 235 
management of the microscope and accessory apparatus. Henry 
Mills showed the mounting of sponges with some fresh specimens 
which he had obtained here. Dr. S. F. Newcomer had a crowd of 
admirers witnessing his deft handling of diatoms with mechanical 
finger, and arranging them in different designs. Prof. W. A. 
Rogers’ table was occupied with specimens of his unsurpassed rul- 
ings and standards of measurements; while the professor showed 
methods of micrometry. The sliding microtome was in the as- 
cendant and its workings well shown by H. E. Summers in serial 
sections; and especially by Dr. Jas. E. Reeves, who carelessly 
sliced sections 5,);5 of an inch thick and distributed to those who 
wished them. The doctor has devised an ingenious water bath 
and oven in which he melted paraffine and prepared his speci- 
mens for cutting dry. The section is then fastened to the slide by 
oil of cloves and collodion and it is run through the stainer, etc., 
without displacement. His skill gave the Bausch & Lomb Micro- 
tome quite a boom. In addition was the table presided over by 
Prof. Seymour, assisted by Miss Myrtie Crawford, who with a Beck's 
Schanze Microtome immersed in a vessel of water, cut sections un- 
surpassed and very rapidly, forty-six per minute, actual count. 
These sections, both animal and vegetable, they placed in bottles 
and distributed to the members. One of the most instructive ex- 
hibitions, and one fully appreciated, was that by Messrs. Sargent 
and Oviatt, in a successful method of injecting the blood vessels of — 
a cat previously dilated by the inhalation of amyl, as suggested in 
Mr. Sargent’s paper read in session. Mr. Vorce attracted attention 
in showing the adulterations of food; while Dr. Thos. Taylor ex- 
hibited a great number of specimens of different fats, and gave a 
practical comparison of lard and butter on the same slide. A. R. 
Spencer was present and exhibited the manipulation of objectives. 
Francis Wolle showed preparations of the Desmidacia. James E. 
Whitney gave full instructions in making cells of wax, “ sweat 
proof; while C. E. Alling double stained vegetable sections with 
aniline colors, set with a solution of tannine as a mordant. S. 
Wilson Baker, assisted by Miss Grace E. Edwards, exhibited the 
making of wax cells, staining pollens, etc. Mr. and Mrs. Chas. 
Wellington gave a complete exhibition of mounting, cell making 
and staining. His card, which he freely offered, was a handsome 
slide, mounted by himself. The “ Duke” is willing to give away 
anything he has, save his wife and himself. . 
