ill a 
BOTANICAL PUBLICATIONS 
PRICES NET. POSTAGE ADDITIONAL 
BOLUS foes ) vite ORCHIDEARUM AUSTRO AFRICANARUM EXTRA TROPICARUM ; or figures bg 
age gee ptions of extra tropical South African orchids, Vol. 1, with roo colored and plain plates, 8vo, cloth, 189: 
JACKSON NB.) -) GUIDE TO a OF BOTANY, including nearly 6,000 titles not given in Pritzels’ 
rus, 4to, cloth, 
VEG ee Piagreni rie . a . eeeiaes towards a bibliography of economic botany, with a compre- 
hensive subject-index, cloth, 1882, 
MILLS sue Dense! an PHILIP THE DIATOMACEAE OF THE HULL DISTRICT with illustrations of 600 species, 
SANDER’ _ nmctie GUIDE, ie penta. all the best ean species, varieties, and h chids in cultivation 
— “ oe and p tage of all the known hybrid orchids up to =. os I, 1got, roy. 8vo, half 
1g0 
SIM nee THE FERNS OF SOUTH AFRICA, eo ——— and figures of the ferns and fern allies 
of South Africa, with localities, cultural notes, with 15g plates, 8vo, half bound, 1892. £1 
VAN HEURCK (H.) A TREATISE ON bdipess DIATOMAC pi containing introductory arks on the structure, 
life heap A collection, cultivation and preparations of diatoms, and a description oak “figure na ypical of nar 4 
known genus, as well as a description and figure of every species — din the North Sea rdering 
"Tra nslated by W. E. Baxter, 36 pr and engravings (2 figures) imp. 8vo, ist 1£96, £2. 
FOR SALE 
SOWERBY (J.) and J. E. SMI Lali gee yee BOTANY ; or colored figures of British plants, with their essential 
sig ree Synonyms, a places of — > with ge eneral indexes and supplement (in five vols.) by W. pee, 
C, Babin W. Newbould, the figures by J. de C. Sowerby and J. Salter, 2,998 colored plates, 41 vols 
8vo, half m orocco, 1790: meee ‘£57 5s. An absolutely perfect copy ending with plate 2,998 (the teat publ ished) 
and the text to plate 2,999. 
WILLIAM WESLEY & SON, BOOKSELLERS AND PUBLISHERS 
28 Essex Street, Strand, London 
ee] = @] 2] 8232838 B88B88 87 
’ ; Microscopes 
The Role of Diffusion and ( - ig Microscopes Doublet lens, for Nature ( 
0 2 $3. Dis ssecting Microscope, new Pei t le ens, /¢ 
'smotic Pressure in Plants Sa ies Mactan) 
TON EDWARD LIVINGSTON analy tedeced Ss Ses ba i) 
Botanical Supplies— — Dissecting in- ’ 
struments and sets for biological and bo- 
eid work, botanical reer plant 
3 : presse etc. Project- r) 
- c- 
ing Mic scopes and polar cooua, ele 
tric, calcium and brightwie light stere- 
ides 
for both beginning and advanced 
students, as the first part is a ther- 
ough and concise treatise on osmotic 
phenomena in organic life; while 
the second part is a more discursive 
and equally thorough discussion of 
the present status of knowledge in ia O R Ss A L E 
regard to the occurrence of these 
phenomena, together with a bibli- 
ography on the subject. A Collection of Delaware Plants 
xiV+I50 pages, 8vo, cloth 
optic Educational lantern s 
Special onion: © sc chee end for cata logue 
Williams, eau wn @ Earle é 
Dept. 17 g18 Chestnut Street, Philadelphia 
=e @ & 222222 se 
es 
¢ 
3 
ry . , 
Chis book would serve as a manual 
( 
a 
Containing about 20,000 specimens. This is the larg- 
net, 
of, a 5°; postpaid, $1.60 est collection - the plants of the state that has yet 
been made and includes a mber of its rare and 
scarce plants. The lower Be ihe orders are both 
ai UNIVERSITY OF CHICAGO represented. For particulars addre 
RES CHICAGO, ILLINOIS ALBERT colnaibiae 
WILMINGTON, DELAWARE 
