180 
NOTICES TO CORRESPONDENTS. 
All communications should be ad- 
dressed to the Editor, Mr. George E. 
Davis, Dagmar Villa, Heaton Chapel, 
Stockport ; and matter intended for 
publication must reach us not later than 
the 14th of the month. 
All communications must be accom- 
panied by the name and address of 
the writers, not necessarily for publica- 
tion, but as a guarantee of good faith. 
Cheques and money orders to be made 
payable to George E. Davis, the latter 
at the Manchester Chief Office. 
R. C. P.—Thanks for the cuttings. 
The caterpillars arrived too late for 
notice this month. 
W. S.—The photographs arrived 
safely, and are very well displayed. 
You will see we have alluded to them. 
Thanks for the information. 
M. H. S.—The photographs and 
apparatus shall be carefully returned 
to you. 
C. J., B. A., H. C.—See our reply 
to D. B. and others, in last month’s 
issue. 
W. B.—Thanks for your tube of or- 
ganisms ; the larger ones, however, 
arrived dead. 
We are obliged to those numerous 
correspondents who have replied to 
our queries in last number, and assure 
them that their remarks will be fairly 
considered. 
EXCHANGE COLUMN FOR 
SLIDES AND RAW MATERIAL. 
Communications not exceeding 24 words 
are inserted in thiscolumn free. They must 
reach us before the 14th of each month, 
Exchangers may adopt a nom-de-plume under 
care of the Editor, but in this case all replies 
must be accompanied with a penny stamp 
for each letter to cover postage, 
PHOTO-MICROGRAPHS of Liver fluke 
from sheep and parasite from whale in 
exchange for well-mounted slides of 
desmids, algze, lichens, parasites, &c. 
THE NORTHERN MICROSCOPIST. 
W. Shipperbottom, 8, Chatham-street, 
Bolton. 
CATERPILLARS from Pendle Hill. 
I shall have pleasure in sending (on 
receipt of stamped directed box) to 
any of your subscribers, two or three 
of the caterpillars. R. C. Pilling, 
Robin’s Nest, Blackburn. 
SLIDES FOR EXCHANGE.—“ Beta,” 
care of Editor. 
Hypra Fusca for tube of H. fusca. 
Send botanical object of interest. 
Midgley, 244, Waterloo-st., Bolton. 
SALE AND EXCHANGE COLUMN 
FOR APPARATUS, BOOKS, Ere. 
Advertisements in this column are inserted 
at the rate 4d. for each 12 words or portions 
of twelve. 
Advertisers may adopt a nom-de-plume 
under care of the Editor, but in this case all 
replies must be accompanied by a penny 
stamp for each letter, to cover postage. 
All Advertisements intended for insertion 
in this column must reach us before the 14th 
of each month, 
Collins’s histological microscope, 
new, %Zin. and Yin. objectives, polari- 
scope, micrometer, coarse and fine 
adjustments, mirror, two eye pieces, 
cabinet. Cost over £10; price £6 Ios. 
cash. Geo, Postlethwaite, 1, New- 
barns, Barrow-in-Furness. 
MICROSCOPE FOR SALE.—A good 
No. 3 binocular, by Browning, with % 
inch and ¥ inch objectives, by the same 
maker, and a pair of A eyepieces. 
Also achromatic condenser polariscope, 
camera lucida, Morris’ stage, Selenite 
stage, and silvered side reflector, the 
whole in mahogany case, with box for 
apparatus, cost £26. What offers for 
this splendid working instrument ?>— 
Address, in first instance to CHEMI- 
cus, care of the Editor, NORTHERN 
MICROSCOPIST, 
OBJECTIVE.—A fifteenth, by Dancer, 
170° angular aperature, price4£8. This 
is a splendid glass, the only reason for 
parting with it being that the owner is 
about purchasing a homogeneous six- 
teenth, and does not want both. A 
splendid glass for working at Bacteria. 
—xX., care of the Editor. 
