
228 THE NORTHERN MICROSCOPIST. 
a a ee ee 
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. 
D, A. C.— Mount the object in 
Balsam and Benzol. Starches mounted 
in this medium are only useful as 
polariscope objects. 
H. H.—We do not know anything 
of the publication you mention. The 
aperture shutter zs useful; we hope to 
prove it next month. 
D, V. B.—We shall be glad to verify 
your objectives if you will send them 
to us next week. 
C. A, R.—Yes. By all means go to 
a professional photographer; he will 
be able to aid you in manipulative 
matters, but not in the arrangement of 
your objects or their illumination. 
H.R. C.—Your Lichen is Col/ema 
pulposum, and the Moss Tetraphis 
pellucida. 
H, P.—We are glad you are satisfied 
with Bulloch’s ‘Biological Stand.” 
We note you say “I consider it far 
better value than any English student’s 
stand which I have seen.” 

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, 
WANTED. Paraboloid and Parabolic 
Reflector. Exchange splendid teles- 
cope, Photo-camera and ¥ plate lens, 
&c.—R. C. Pilling, Robins Nest, 
Blackburn. 
STARCHES, Will exchange a large 
variety of starches and other slides for 
parasites, geological,or other good slides. 
—J. E. Fawcett, Rawdon, nr. Leeds. 
Eccs OF SHEEP FLUKE in exchange 
for foraminifera or diatoms. —C. E. W., 
31, Darley-street, Bradford, Yorkshire. 
CORRESPONDENTS WANTED in all 
parts of the world to exchange micros- 
copic slides or material. All com- 
munications answered.—F. L. Carter, 
20, Trafalgar-st., Newcastle-on-Tyne. 
SIX DOZEN micro.slides for exchange. 
Send list to John Alex. Ollard,F.R.M.S., 
Ye Hermitage, Forty Hill, Enfield. 
STRAW BRisTLE Movutp will be 
sent on receipt of stamped addressed 
‘envelope to E. Holmes, 149, Essex- 
road, London. 
WANTED diatomaceous deposits and 
dredgings from all parts of the world. 
Will be glad to hear from correspon- 
dents abroad.—T. E. Doeg, Evesham. 
Woop SEcTIONs given in exchange 
for rare starches. Send list to the 
Editor, and, if mounted, state in what 
medium. 
WANTED first-class botanical and 
geological slides, rock and bone sec- 
tions; also double-stained vegetable 
tissues and other good objects. Offered 
in exchange anatomical and pathologi- 
cal preparations, a variety of well- 
mounted and interesting specimens, — 
- . R. Martin, Malvern House, Cleve- 
on. 
FIsH SsCALES—forty kinds, seeds forty 
kinds, eighteen kinds of Zoophytes un- 
mounted, in exchange for well-mounted 
slides. —Send lists to B., 36, Windsor- 
terrace, Glasgow. 

