172 THE AMERICAN MONTHLY [Jun 
On the first Friday in each month, a “Gossip” evening 
is held, at which specimens are exhibited by members 
and discussed conversationally,the regular business meet- 
ings of the society taking place on the third Friday in 
each month. There is, in addition, a first-rate library, and 
cabinet containing 6,000 slides, which are at the disposal 
of the members. 
We have before hand a list of the excursions for the 
forth-coming season. These take place principally on Sat- 
urday afternoons, and have for their object the collect- 
ing of material that will afford interesting studies micro- 
scopically. “Pond life” has always been a very strong 
subject with the club. Visits are cordially invited to the 
meetings, which are held at 20 Hanover Square. 
When it is stated that all these advantages are offered 
without entrance fee for the modest sum of 10s. per an- 
num, it will be conceded that every microscopist ought to 
make a point of becoming a member, and so supporting, 
in a practical manuer, a club which has in the past and 
will continue in the future to promote the best interests 
of every feature in microscopy. 
Rineina SLIDES.—Many amateurs prepare and mount 
specimens remarkably well, but few manage to put the 
ring of cement on neatly. It requires practice certainly, 
but generally it is through using the cement in too thick 
acondition. Professional mounters have two bottles, one 
containing the cement, the other the solvent—generally 
turpentine or methylated spirits. The brush is first dip- 
ped in the solvent, then in the cement, and a thin coat is 
deposited on the slide as it is rotated on the turntable. 
Some build the ring up.at once, others allow the first lay- 
er to dry and then complete the process: if there is suf- 
ficient time available the latter is the better way, but each 
time a fresh brushful of cement is taken, it should be pre- 
ceded by a dip in the solvent. The cement can then be de- 
posited with cleanness and regularity.— Knowledge. 
