706 
SUMMARY OP CURRENT RESEARCHES RELATING TO 
soldering the pieces together by a special cement. The new cup (figs. 
86, 87, and 88) made by this firm consists of a very thick glass plate g , 
ground on one face and pierced with a number of holes (fig. 87, b and 
fig. 88, h ). A sheet of thinner glass i, soldered to the thick plate by 
cement (fig. 88, h) forms the bottom of the box and converts the holes 
Fig. 86. 
> -1 l~3 <S> OOOT3 C2 0 e=>/ 
m <s> : m 
/c 3 o o o © o c o n r'/ 
Fig. 88. 
Fig. 87. 
in the thick plate into a series of cups ; while a third piece of ground 
glass, fitting accurately on the ground surface of the thick plate, forms 
the cover. 
The apparatus can be placed on a small box d, provided with an 
inclined mirror e, which illuminates the cups from below so that their 
contents can be readily recognized. 
To remove Oil and Grease from Whetstones.* — The process con- 
sists in stirring up whitening with water and applying it with a brush 
to the whetstone which has been warmed in an oven. 
Oil of Anise-seed as an Imbedding Medium for the Freezing 
Microtome.j — Dr. H. Kuhne has discovered that oil of anise-seed may 
very successfully be used as an imbedding medium for cutting sections 
with the freezing microtome. The procedure is as follows : — Pieces 
about 2 mm. thick are placed on blotting-paper to remove the alcohol, 
and then immersed in a capsule containing the anise-seed oil for 12-24 
hours. When thoroughly saturated with the oil — and this is easily 
recognized by the clearing up of the material — the pieces are placed on 
the microtome and sectioned. The sections are temporarily transferred 
to anise oil on a glass rod, and when all the piece is sectioned, are 
placed in alcohol (twice repeated) to remove the oil. When all the oil 
is removed, the sections are ready for staining. 
Method of Cold-imbedding in Gelatin.! — M. C. Brunotti gives the 
following formula which he has used for some time with very good 
results and has found very useful for histological purposes. In 200 
grm. of distilled water are dissolved by aid of heat 20 grm. of the 
* Zeitschr. f. Wiss. Mikr., ix. (1892) p. 135. 
f Centralbl. f. Bakteriol. u. Parasitenk., xii. (1892) pp. 28-30. 
% Journ. de Bot., vi. (1892) pp. 194-5. 
