PROCEEDINGS OF SOCIETIES. 
161 
than any other preservative lie possesses. The beautiful little Volvox 
glohator can be kept in an almost unaltered condition in a cold, 
saturated solution of salicylic acid ; and I have made a truly elegant 
preparation of Volvox by first immersing it for a few minutes in 
Beale's carmine staining fluid, and then mounting it in the salicylic 
acid liquid. Details are brought out in this way that are difficult to 
see in the living animal. Desmids, likewise, seem to keep well in the 
same preservative, and diatoms, with which I am at present experi- 
menting, seem not to change materially after immersion in salicylic 
acid solution for a week." 
Histological Micro-photographs. — Our readers will be glad to 
learn that a work is promised by an American house, entitled ' Micro- 
photographs in Histology, Normal and Pathological/ by Carl Seiler, 
in conjunction with J. Gibbons Hunt, M.D., and J. G. Kichardson, 
M.D. ; to be published in twelve numbers, 
A New Adjustment for Cox's Turn-table. — An American con- 
temporary states that a slide may be, by this turn-table, centered for 
width only, by laying it on the table at right angles to the line of 
the spindle and placing triangles of brass, or even cardboard, betw^een 
it and the clutches which are designed to hold the corners of the 
slide. When thus arranged, the slide may be slipped so as to bring 
different parts of its median line successively to the centre of the 
apparatus, and thus a series of cells may be made upon the same 
slide, or any desired group of cells may be made by using a variety 
of unequal triangles. For common use, the two triangles should 
be exactly alike, should be right-angled, and should have the sides 
adjoining the right angle one inch in length. Such pieces may be cut 
from sheet brass about the thickness of an ordinary glass object-slide. 
These triangles may also be used, with the addition of a few cardboard 
blocks, for the purpose of decentering, in refinishing old slides that 
have not been accurately centered. 
PROCEEDINGS OF SOCIETIES. 
QuEKETT Microscopical Club. 
Ordinary Meeting, June 23, 1876.— Dr. Matthews, F.R.M.S., 
President, in the chair. 
The usual nominations took place for President, officers, and four 
members of committee. Henry Lee, Esq., F.L.S., &c., was nominated 
President for the ensuing year. 
A communication from the Eev. J. Bramhall was read, describing 
his new oblique illuminator, and explaining its principle and mode 
of use. 
A paper by Mr. James Fullagar, on Tuhicolaria najas, was read, 
giving an interesting description of a large number of observations of 
this rotifer, from the egg to maturity. These observations were 
made upon carefully isolated specimens. A curious fact in the life 
history of this rotifer was that it did not hatch out of the ovum, but 
