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354 THE NORTHERN MICROSCOPIST. 
shire, including Sclerofodium caspitosum, Myuma pulvenata, and Tortula 
/atifolia—the two latter species being new records for that district. 
Mr. W. H. Pearson exhibited specimens of two new hepatics described by 
Dr. Spence in his recent memoir on the Cephalosia, namely Cephalosia 
Cucantha (Spuce), collected by Mr. Sim, near Banchory, Scotland, and 
Cephalozia eraria (Pearson) from the mouth of old copper mines near Tyn-y- 
Groes. Mr. Pearson also exhibited the following species :—/ungermannia 
Helleriana (Nees), a species new to Britain, collected by Mr. G. Stabler at 
Mardale, Westmoreland. The rare Marsupella Stableri, found on Cader Idris 
by Mr. G. A. Holt, this being new to Wales. Harpanthus scutatus from Tyn- 
y-Groes, by Mr. C. J. Wild, a rare species, hitherto only found in Wales at 
Beddy-clert, and Anthelia Jurabzleana from Ben Laorgh, by Mr. Peter Ewing, 
being the second station in Britain for this rare hepatic. 
MANCHESTER MICROSCOPICAL SOCIETY.—The mounting class 
met again last week in the Board room of the Mechanics’ Institution, Mr. W. 
Chaffers in the chair. There was a large attendance, the room being full. 
Before operations commenced, attention was called to the desirability of 
forming a collection of ‘‘ failures” in mounting. Slides, illustrating why and 
how failures occurred, it was thought, would have some practical value, by 
shewing what to guard against and avoid. 
An increase in the number of volunteer demonstrators enables the class to 
carry on two or more demonstrations at one time, and on this occasion Mr. W. 
Stanley, officiating at one table, completed the process of dry mounting 
commenced at the last meeting. These mounts are usually for opaque illumin- 
ation and observationy and are, as a rule, the first mounts which tyros are 
supposed to give attention to. The operation consists in hermetically sealing 
up in a cell, with a thin glass cover, some object previously prepared; thus 
rendering it at all timés ‘available for immediately placing under the microscope. 
Some objects can only"be satisfactorily viewed by this method. One of the 
objects mounted, the insectivorous plant, Drosera rotundifolia, with insects in 
situ, is usually examined in this manner, and under a binocular is a very pleasing 
and instructive object. 
At another table sat Mr. T, W. Lofthouse, who essayed to shew the process 
of mounting the proboscis of blow-fly in balsam. This is an old and familiar 
object. Few microscopists but what are acquainted with the mount; fewer 
‘still, strange to say, know how, or can put the mount together. Simple indeed 
appeared the operation as performed by Mr. Lofthouse with entire success. 
Matters were simplified much by a number of ingenious clips, springs, and 
other apparatus invented by the demonstrator, and which could be easily made 
by the lookers on. Whether those who watched the proceedings will find the 
execution of work as simple and easy a matter as it looked when done by skilled 
hands remains to be seen. 
_ The President, Mr. W. Chaffers, distributed a number of objects for mount- 
ing, including Indian ferns, leaves, zoophytes, sponges, cuticles, etc. 

NOTES AND QUERIES. 
CHANGE or AppreEss.—On account of letters still being sent to 
Heaton Chapel, the Editor finds it necessary to again inform his 
correspondents that his present address is The Willows, Fallow- 
field, Manchester. of) 
