NOTES AND QUERIES. 99 
one ounce of Gum Damar in two ounces of Benzol ; omitting the 
Mastic, Chloroform, and Oil of Turpentine.— Samuel Dent. 
CEMENT FOR GLYCERINE Mounts.—In replying to W.’s query 
on this subject I do so because I want to say a few words on the 
slovenly manner in which many objects are put up in glycerine by 
certain preparers of objects. The object is soaked in glycerine, 
put upon the slide and covered with a thin glass cover. The excess 
of glycerine is then absorbed by a moistened but a squeezed-out 
brush and a ring of hot and rather thick gelatine solution run 
round the cover in the turntable. After thoroughly drying, a ring 
of white zinc varnish, or of asphalt is superposed, the slide being 
thus finished. This is the process I believe W requires, and I 
certainly advise him to leave it alone; if he wants to mount objects 
in glycerine, use a gold size cell, and fix down the cover with 
gold size. In the course of a year or so, slides mounted in the 
manner just described, without a cell, are so fragile that on simply 
wiping the dust off the cover with a soft silk handkerchief the thin 
glass is in nine cases out of ten removed.—Zhomas Newsome. 
LeaF Funci.—I should like to remind the readers of THE 
NORTHERN MIcroscopist that April is the best month for finding 
the beautiful cluster-cup <£cdium ranunculacearum and also 
Uromyces ficartez. Both are found upon the pile-wort, a plant very 
common in the Manchester district, Gatley Carr and the surround- 
ing neighbourhood is a capital hunting ground for both. I find 
them both there, every year.—TZhos. Brittain. 
Empryo Mussets.—These molluscs form good microscopic 
objects. If placed in a thin trough or, better, a hollow slide, they 
may be readily examined with high powers. Amongst a group of 
them one or other of them will be seen occasionally to shut up 
spasmodically. The student should not fail to examine them with 
a polarized light and with a selenite, as their structure is thereby 
seen much more clearly, and they are well worth mounting as a 
permanent slide for polarized light.—Zvos. Bolton. 
MounTING Marine Atcz.—Reply to E. C. Jelly—Marine 
algee, which cannot be mounted in balsam, owing to the collapsing 
of the fronds, may be washed and afterwards soaked in diluted 
glycerine (glycerine one ounce, water nine ounces) in a watch glass, 
which is put into a dessicator so that the excess of water may 
evaporate. After the tissues have become filled with stronger gly- 
cerine, the algee may be mounted in glycerine jelly in the usual 
manner. 
