296 THE NORTHERN MICROSCOPIST. 
for he alone among animals cooked his food. In perfect cooking lay the true 
preventative remedy, because if the measle were destroyed the perfect animal 
or Teniz would cease to exist, and it had been found that a temperature as low 
as 140° F. was sufficient to destroy the meat measle. 
Mr. Edward Ward, F.R.M.S., read some notes on Micro-crystallization, 
which dealt with the various processes of obtaining slides of different salts, and 
combinations of them. The modes of obtaining the various crystalline prepara- 
tions from tartaric acid, gallic acid, pyrogallic, hippuric, and citric acids were 
fully explained, detailing how large and small crystals could be formed, as well 
as the wheel and floral forms. The mode of dealing with the various salts of 
soda and potash and their combinations followed. 
Mr. George E. Davis, in a few pertinent remarks on the practical study of 
Micro-crystallography, instanced how readily now-a-days the microscope could 
be brought into use for the solution of many technical difficulties. 
The papers were listened to with great attention, and votes of thanks were 
heartily accorded to the several readers. 
The display which followed was unusually good. Mr. Davis brought before 
the notice of the members a new form of stand by Ross, having a sensitive fine 
adjustment ; and also a diaphragm made for him by Messrs. Ross & Co., to 
cut down the apertures of objectives when ‘‘ penetration” is required. [This 
will be described in our next issue.—Ep.] Mr. E. B. Cook showed a remark- 
ably clean gathering of desmids and diatoms, in which Clostertum lunula, C. 
striolatum, and Micrasterias denticulata were abumdant. Mr. Aylward ex- 
hibited a most carefully prepared series of starches 7 situ by the aid of polarized 
light; Mr. H. C. Chadwick, living specimens of Anthophysa vegetans and 
polyps of Adcyonium digitatum, showing extended tentacles and spicula 27 situ; 
Mr. A. H. Doherty, the cellular tissue of the rush and sugar-cane ; and Mr. J. 
L. Miles, vertical sections of the cat’s lip and tongue injected and stained. The 
slides illustrating Mr. John Smith’s paper were valuable, and extraordinary 
care had been taken in their preparation. 
MANCHESTER NATURAL HISTORY SOCIETY.—At the last meet- 
ing of the Lower Mosley-street Society, held on Monday evening the 14th inst., 
a variety of interesting objects were exhibited by the members. Mr. Charles 
J. Wild showed a fine collection of mosses, many of which were rare, and 
amongst them were representatives of the genera Campylopus, Dicranella, 
Dicranium, Gymnostomum, Andreea, Phascum, and Cynodontium. Mr. Thos. 
Brittain showed over a hundred leaves of various plants which displayed in a 
remarkable manner the tints of autumn, such as red, brown, yellow, black, 
and green. In some of the specimens these colours were distinct and very 
conspicuous, but in others they were beautifully blended together. An extra- 
ordinary slide for the microscope was exhibited, which had upon it fifty 
species of Foraminifera arranged in groups, the name of each underneath 
having been photographed, so as to occupy little space. Some living Ferns 
were shown by Mr. Thomas Rogers, a fossilized plant by Mr. R. Graham, and 
some fish scales by Mr. H. Hyde. 
NOTES AND QUERIES. 
THE “Concress” TURNTABLE.—The “Congress” Turntable, 
invented and first exhibited by Mr. Sidle at the ‘Congress of 
Microscopists,” held at Indianapolis, may be thus briefly described : 
Into the upper surface of the rotating plate, diametrically op- 
