~ 
THE MICROSCOPE. 5 
outlet-tubing being furnished with a small glass tube, by which 
means a,too rapid out-flow of water is prevented. The tubes of the 
freezing-box are so arranged as to prevent their revolving with the 
revolutions of the table. 
¢ 
pra, ES ae 
am 
——_ 
When ether is used, the little brass plug in front of the freez- 
ing-box is removed, and the rubber tubing detached. 
In preparing to make sections, remove the freezing-box altoge- 
ther, and in its place substitute a cork which projects suitably, and 
presents the object from which sections are to be taken, embedded 
in wax or paraffine, at the proper angle to the blade of the knife, 
regulated by means of the finely cut screw-thread of the table. 
(B) Is a curved knife about five inches in length, and about 
one inch in breadth, ground flat on the under side, and held in posi- 
tion by a binding screw (c) after the fashion of several microtomes 
now in use. A straight knife may be used if desired. 
AaricuLturAL Department, Wasuineton, D. C. 
VACATION NOTES UPON SOME BOTANICAL LABORA- 
TORIES. 
CHAS. E. BESSEY. 
R. BARY’S laboratory remains in nearly the condition in 
which he left it at the time of his death in January. It is 
housed in a fine stone building standing a few hundred yards back 
of the main building of the University of Strassburg. Of the build. 
