72 
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. 
J. A.—We have forwarded your 
letter notwithstanding it was unaccom- 
panied by a stamp as indicated in our 
directions. (Vide paragraph in Notes 
and Queries. ) 
B. D.—See our reply to J. A. 
C. A. S.—See our reply to J. A. 
J. B.—We cannot understand why 
you should have any difficulty in pro- 
curing the NORTHERN MICROSCOPIST. 
You may obtain it from any bookseller. 
T. Brittain.—Thanks for your letter 
containing fragment of Merulius lacry- 
mans in fructification, and the other | 
micro-fungi. 
A. A. A.—Tolles’ objectives may be 
obtained from Charles Stodder, 131, 
Devonshire-street, Boston, U.S. A. 
A. J. Doherty.—An article on Dia- 
toms in this number may give you the 
information you require. 
EXCHANGE COLUMN FOR 
SLIDES AND RAW MATERIAL, 
Communications not exceeding 24 words 
are inserted in thiscolumn jree. 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, 
JOURNAL OF THE RoyAL MICcRo- 
SCOPICAL SocigTy. The first 5 Nos. 
of 1880, published at 4s. each. What 
offers of slides? fungi preferred. 
‘* Fungus,” care of Editor NoRTHERN 
MICcROSCOPIST. 
| resolve angulatum. 
THE NORTHERN MICROSCOPIST. 
TYPICAL SPECIMENS of Lichens, 
mounted and properly named ; in ex- 
change for typical specimens of Mosses, 
mounted and properly named.— 
Address :—‘‘ Ravenwood,” care of 
Editor, NORTHERN MICROSCOPIST. 
For well mounted Microscopic 
object of interest send other well 
mounted object.—Creese, Brighton 
Villas, Cirencester. 
SALE AND EXCHANGE COLUMN 
FOR APPARATUS, BOOKS, Eve. 
Advertisements in this column are inserted 
at the rate 4d. for each 12 words or portions 
of twelve. 
Advertisers may adont 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, 
For SALE, a half-inch objective by 
Dancer, with collar adjustments, will 
Price £2, or will 
exchange for a good herbarium of cor- 
rectly named mosses of about 8ospecies 
and one of lichens of 1oo species. “D.” 
care of Editor NoRTHERN MICROs- 
COPIST, 
First CiaAss Micro-CHEMICAL 
SLIDES for polariscope: 50 varieties ; 
rare alkaloids, dichroic salts, etc. Also 
some foraminifera and small land 
molluscs. 8d. each; 7s. dozen, free. 
—J. H. Jennings, 14, Beech-avenue, 
Sherwood Rise, Nottingham. 
VALLISNERIA SPIRALIS PLANTS, 8d. 
dozen, two dozen Is. 2d., free.—W. 
Holmes, 118, Gerard-street, Derby. 
A FEW DUPLICATES of Micro- 
scopical slides, well mounted. Price, 
7s. per dozen ; six dozen for £2.—H. 
Francis, 12, Sion-hill, Clifton, Bristol. 
Warp’s MICHIGAN botanical series 
and other well mounted microscopic 
slides. Price, 4s. 6d. dozen. Also 
apparatus.—E. Clover, Springfield, 
Sudbury, Suffolk, 
VALLISNERIA and assorted aquarium 
weeds, 8d. dozen, free.—Mr. Keall, 
Chemist, Swansea, 
