1316 Scientific News. [ December, 
Jung, 15 Hauptstrasse, Heidelberg, or can be ordered through 
Geo. A. Smith & Co., 7 Park street, Boston, Mass. ; 
TYPE-METAL Boxes FOR ĪMBEDDING.—I have before describec 
the type-metal boxes and the method of using them in imbedding, 
and should now add, what was unknown to me at the time, tha 
the credit of introducing such boxes belongs to Mr. Geo. Dim- 
mock. Mr. Dimmock also used for the same purpose quotations, — 
such as are used by printers in filling blank spaces at the begin- — 
ning and end of chapters. These quotations vary somewhat in 
size, and are sold at 25 cts. a pound. 
EE EREA 
with glycerine, and then the box is washed with collodion and 
placed on a water-bath in order to evaporate the ether. ‘ge 
way a box is obtained in which paraffine can be kept for hours in 
a fluid condition without escaping between the glass and the 
metallic pieces. The box is kept ona small water-bath, made 
for this special purpose, while arranging the object under the d wo 
secting microscope, 
0, 
SCIENTIFIC NEWS. | 
— Dr. F. C. Noll has found a fluid which is very suitable for : 
permanent preparations of delicate Crustacea and their larva, Pre ik 
venting their shrinking or becoming too transparent. | ee 
It is a mixture of equal volumes of Farrants med = 
Meyer's fluid No.11. It is never cloudy nor entirely dry, althous” 
it has such a consistency that air-bubbles scarcely ever 
The preparation is sealed with asphalte or some other vat 
In order to prevent the cracks arising in the asphalte varn 
is better, after a time, to pass over it a layer of transp 
shellac. ee 
Hydroids, small medusz and other ccelenterates W ee ee 
been hardened in alcohol and then stained may, the aul’ mi 
be splendidly preserved in the above fluid. 
r. W. S. Kent has found potassic iodid 
serving Infusoria. It acts in a manner a 
A 
i ic iodide in dist 
lows: Prepare a saturated solution of potassic iodide pe 
water; saturate this solution with iodine, filter, and e 
1 AMERICAN NATURALIST, Oct., 1882, p. 781. 
