J. LIZARS, 
Manufacturing Optician & Scientific Instrument Maker, 
260 Sauchiehall St., and 16 Glassford St, 
GLASGOW. 
Agent for Carl Zeiss in Jena, 
From whom he always has a large consignment of Aplanatic 
Lenses, Polariscopes, A be Condensers, Microscopes, Stands 
(the latter from the simplest to the most compound). Micro- 
Objectives, including Homogeneous Immersion Lenses and Apo- 
chromatics. 
Microscopes of other Celebrated Makers kept in stock and 
supplied to order. 
J. L's Glasgow Student ' Microscope, of excellent workman- 
ship and handsome design, own manufacture — 
Price, with fine adjustment only, ... ... ^5 los. 
Price, with fine and Coarse Adjustment, includ- 
ing 1" and J" or i" and Y Oujtctives. ... los. 
A large stock of Botanical Lenses, Dissecting Microscopes, 
Microtomes, Microscojnc Lamps, and a large stock ot Micro 
Objects. Inspection invited. 
LIST FREE. 
THE SCOTTISH NATURALIST. 
A QUARTERLY MAGAZINE OF NATURAL SCIENCE, 
Edited by W. EAGLE CLARKE, F.L.S. 
Articles and communications for the Magazine should be sent to the Editor, 
before the ist of December, March, June, or September, if intended for 
publication in the January, April, July, or October numbers respectively. 
All communications, except Botanical matter, for publication to be addressed 
to the Editor, Museum of Science and Art, Edinburgh 
Botanical communications may be addressed to Prof. Trail, Aberdeen 
University. 
Orders for copit-s, subscriptions, &c., should be sent to the Publishers, 
Cowan & Co., Limited, Perth, from whom also Terms for Advertising may 
be had. Copies of the Magazine may be had from J. Lizars. 
Annual Subscriptions, payable in advance, 4s. fcd.^ post free. 
Authors desiring reprints of their communications can obtain them at the 
following rates, sent carriage paid : — 
Copies. 
25 
50 
100 
Pages. 
2 
2 
Price. 
3s. od. 
4s. od. 
5s. 6d. 
Pages. 
4 
4 
4 
Price. 
4s. od. 
5s. od, 
6s. 6d. 
Pages. 
8 
Price. 
6s. od. 
7s. 6d. 
9s. od. 
And so on in proportion. Covers charged extra. 
