110 PROCEEDINGS OF SOCIETIES. 
off the front glass and cementing it down again. It may be done 
easily by any one used to cleaning glasses. 
Mr. Haut rose for the purpose of making some remarks on 
Mr. Smith’s paper cells, and bringing to the notice of the Society 
some of Mr. Lee’s cells, made on the principle of pill-boxes. He 
said—I thought them very good when I received them, and the 
only possible objection to them is that they might be affected by 
damp. Mr. Brooke, our then President, thought that if they 
were made with cement instead of ordinary gum that difficulty 
would be overcome; I think I have overcome the difficulty by 
soaking them in Brunswick black. I wish to call special attention 
to these cells, which I consider better than Mr. Smith’s, and for 
this reason—because, made in the way I have mentioned, they 
can be made as cheaply as Is. a gross, or thereabouts. They can 
be cut any depth or size, and can be made very accurate. They 
have another advantage, and that is, that the edges of the paper 
in the pill-box cells are placed upon the glass slide, and the upper 
part is covered with the fine glass, which prevents any dam 
passing by capillary attraction. Now, if I understand Mr. Smith’s 
cell, the reverse is the case, for, being punched out of flat card- 
board, the edges of the paper would be upwards, and thus render 
them liable to be affected by damp. I wish to call attention to 
these cells that I have soaked in cement, as I think the process 
will be found better and far less troublesome than to punch them 
on Mr. Smith’s plan. 
Mr. Henry Ler.—I beg to thank Mr. Hall for introducing to 
the notice of the Society the cell 1 mentioned some time ago; 
but, though it was very useful in its way, I think Mr. Smith’s has 
an advantage which has not been mentioned, inasmuch as he is 
able to do a greater number on one sheet, and it is all done in 
one operation, by which a great saving of time is effected. 
Mr. SHapgBout.—lI object to paper cells of every description ; 
I think them thoroughly bad. I never saw an object mounted on 
a paper cell that would last any length of time; and I am the 
more induced to call attention to that fact just now, because the 
gentleman whose paper has been read has alluded to a certain 
material for mounting his cells that, in my opinion, is better 
adapted for making them; I] mean marine glue. Now, some 
fifteen or twenty years ago I was in the habit of mounting a large 
number of microscopical objects, some dry, some wet; and the 
mode I found most efficacious for the dry cells, and the most 
ready of application, was to make the cell itself of marine glue. 
I got a common iron spoon, into which I put my marine glue, 
and held it over a spirit-lamp until it was softened. I then threw 
it on a flat surface while soft, so that it might be squeezed or 
pressed to any degree of thinness. When that was done all I 
had to do was to place it on a card, and, with two or three gun- 
punches, punch out a number of discs of various sizes, and thus 
get smaller or larger rings of glue. I then simply take the glass 
slide, warm it over a spirit-lamp, pick up one of the rings of 
