SCIENCE-GOSSIP. Vv 
CITY OF LONDON COLLEGE 
(CITY POLYTECHNIC), 
WHITE STREET, MOORFIELDS, E.C. 
(Near Moorgate Street) 
PrincipaL: - SIDNEY HUMPHRIES, B.A., LL.B 
FIFTY-SECOND SESSION, 1899-1900. 
Day and Evening Classes are held in ALL BRANCHES OF 
SCIENCE, literature, art, ancient and modern languages, and 
commercial subjects. 
There are CHEMICAL, BIOLOGICAL, and PHYSICAL 
Laboratories for practical work. The art studio is lighed with 
electricity. Students prepared for London University, Civil Ser- 
vice, Accountants, Hat other examinations. 
The classes are open to both sexes. The Gymnastic 
Athletic Club meets on Saturday afternoons. Library, Reading 
and Coffee Rooms open daily. Lectures and Entertainments are 
given in the large hall every Fhursday evening. Numerous 
valuable prizes offered for competition annually. 
Prospectuses and all other information gratis on application. 
DAVID SAVAGE, Secretary. 
BIRKBECK INSTITUTION 
ane, E.C. 
and 
Bream’s Buildings, Chancery L 
Science Classes with Practical Work 
Day and Evening Classes for University 
of London B.Se.; Prelim. Scientific, Inter. M.Bb. 
Examination and for Conjoint Board, Dental and 
Pharmaceutical Examinations. 
Evening Classes in all stages for Science and 
Art Department Examinations. 
Highly-equipped Laboratories. 
Chemistry, Physics, Biology (Zoology and Botany), 
Metallurgy, Geology and Mineralogy, Microscopy. 
Prospectus free. Calendar 6d., (by post §Sd.), on 
application to Secretary. 
The Entomologist's Record & Journal of Variation. 
An Illustrated Monthly Magazine of General Entomology. 
EDITED BY J. W. TUTT, F-.E.S. 
Assisted by H. Str. J. K. DONISTHORPE, F. 
(Coleoptera),and MALCOLM BURR, F.Z.S.,F.E.S.( 
thoptera). 
Published on the 15th of each month. _ Recently enlarred to 
28 pages. Double numbers post free to Subscribers. Su. serip- 
tion price 7s. per volume (including Special Index, with every 
reference to aberrations, varieties, species, genera, Xc.). 
The articles are written by the first entomologists of the day. 
Each month are numerous short notes under following heads : 
“Coleoptera.” ** Orthoptera,” “Scientific Notes and Observa- 
tions,’ ‘ Life-histories, Larvae, ‘Variation, Notes on 
Collecting,” ‘* Practical Hints—F veld Work for the Month,” 
“Current Notes,” ‘‘ Notices of Books,” &c. 
To Lisrartians AND OrHeRs.—A FEW complete 
Volumes are on sale at 7s. 6d. per volume. Sf 
each (those for Vol and II. are out of print)—Subscriptions 
to H. E. Pace, F.E.S., ‘* Bertrose,” Gellatly Road, St. Catherine's 
Park, London, S.E. 
mor. APPLIED MICROSCOPY 
ILLUSTRATED. 
Subscription, $1.00 per year, Foreign, 
ISSUED MONTHLY. 
The Journal deals only with the practical side of 
microscopical technique and apparatus. It 
large amount of original matter from the best writers in 
all the fields in which the microscope is used. eviews, 
abstracts and notices of foreign literature put the reader 
in touch with the whole field of foreign and domestic 
work. While the most advanced methods are recorded, 
there are series of articles specially for beginners. 
sts of the back 
i 
exes at 1S. 
contains a 
Sampce Corres Maitep FREE. 
me URS ADPLIED MICROSCOPY 
P. O. Drawer, 1088. 
ROCHESTER, N.Y. 
BOoK STACK, 
With Adjustable Shelves. 
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Invaluable for Libraries, Museums, Scientific 
Societies, and the Home. 
Write for SSIES) pens Illustrated Catalogue 
to 
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