E $378,1-- ° ' Microscopy. 63 
bookbinder, forming a really handsome set. If the cards are six 
and a half by ten inches they will hold fifteen slides on a page. 
The slides and their labels are well displayed, though they cannot 
lie in the best position for safe keeping except by allowing the © 
volume to lie flat and leaving the under page of each unused. 
Mr. A. W. Stokes, of Guy’s hospital, has contrived a slide box, 
which is less showy than this, but more compact and portable. 
As a compromise between a stationary cabinet and a box for carry- 
ing around, it seems to possess advantages not before -attained. 
A box is made like an ordinary tray-slide box, opening both at the 
top and front. In this the slides lie flat in several tiers of a single 
row each, with their ends pointing towards the front of the box. 
The upper row rests in a tray with a ledge in front, and close to 
the cover when the box is closed. Below this the rows of slides 
rest on shelves, each-of which projects forward half an inch or 
more beyond the one above it, so that the slides will also project 
and the labels of all the rows be visible at once. Stops are ar- 
ranged between the shelves, behind, to prevent the slides slipping 
=.” back too far, and between the separate slides on each shelf to pre- 
vent their striking together. A piece of card-board or thin wood 
hinged to the cover falls in a slanting direction across the rows, 
and keeps the slides from slipping forward in any position of the 
box when it is closed. The shelves may be of light card-board, 
as they are well supported by the wooden strips which confine the 
slides behind and at the sides. A box nine inches long by five 
inches broad and two inches deep will hold thirty-five slides in 
_ five rows or tiers of seven each. [A very neat case may be made 
of a good cigar box, while another box may be cut up to furnish 
the ledges or partitions between shelves. ] 
D1atoms.—Under this title the Industrial Publication Company 
has produced a neat and useful little book which will be a great 
= convenience to many workers. It is a reprint of three papers on 
the subject of collecting, preserving, and preparing diatoms, by 
Professors A. M. Edwards, Christopher Johnston and M. L. Smith, 
respectively. - These excellent papers will be handy in this form 
-even for those whose libraries include the originals in the Lens 
and the Natural History of New Hampshire. 
AMERICAN JOURNAL oF Microscopy.—The great success of this 
popular journal of microscopy, together with the inconvenience of 
mailing half-dollars in the present state of our currency, has induced 
4 the radical change of doubling its size with a corresponding in- 
= Crease of price. While much better opportunity will thus be ob- 
_ tained for elaborate articles, the simple and elementary character 
will still be maintained, The change will please many readers and 
incommode but few. 
MicroscopicaL Societies.—The following elections of new offi- 
_ cers have taken place since the last list published:— 
