Udalker Prizes in Watural Mistory 
Y the provisions of the will of the late Dr. William Johnson Walker two prize offered by the 
Boston ree of Natural His tor nat) for he English re on vitiece 
propose y the Council. 
: For the w memoir pre ted. a prize of $60 may be if, however, th ir b f ked 
merit, th y be ‘ebsiners to $roo, pe the dixceeti oft fy li ee, 
For the next best memoir, a ayaa ai exceeding $50 phasis be inkgpapa 
Prize cs will not I 
The oe for these prizes ts not restricted, but ts open to all, 
Attention is especi sss called to the following points: 
In o be ba aa ona ae body of original and unpublished work, accom- 
‘vated «4 a general review of the erent of the subje 
hing in the memoir lag shall furnish see of the identity of the author shall be considered as 
searing he essay ag ne competitio 
Preference will be pei : memoirs showing intrinsic evidence of being based upon researches made 
Sectas 
Each memoir must rn siaKmnetrs by a sealed te i enclosing Sip author’s name and fe nen rap 
ott a a motto ye I gg to one bo orne by the, manus cript, and must be in the hands of the Secretary on 
be fore April 1 of the year for 
SUBJECTS FOR 1902: 
E> Aap muserent in sbaiagiing 
2 Areas of the Germ of Chordates, as Determined by Local Destruction. 
The a Tad of ps aah to Solutions, Considered from the Standpoint of the Chemical Theory of 
Diwociation, 
SUBJECTS FOR 1908: 
fA h f Thallophytes, 
Str +6 S : a 
én. h . _% * Cra gc 
2. Life Hist y poroz 
GLOVER M. ALLEN, Secretary. 
Boston ea ang F NATURAL Pea 
ston, ae. eg § BaP 
if Ses 
[JUST PUBLISHED] Send 12 cents, U. S. stamps, for 
f Wm. Wesley & Son’s Botanical Catalogue, 1901 ‘ 
SSS SSS55555554 
BOTANY 
28 Essex Street, Strand, - - =. London, England. 
os a: So oe bas ec ae Ree ee 
Being CONTENTS: 
No. 137-138 of Transactions of Scientific Societies Periodicals 
Bibliography History Biographies and Portraits , 
scars Herbals Early Botanical Science Linnaeus 
NATURAL 
Handbooks 
HISTORY and 
SCIENTIFIC 
BOOK 
CIRCULAR 
Microscopy Morphology and Physiology 
Encyclopaedic works Classification Nomenclature 
Cryptogams Phanerogams Fossil Plants 
Natural distribution of Plants (Floras) 
Agriculture and Horticulture to the end of the 18th century 
Gardening Landscape Gardening 
The Flower and Ornamental Garden 
Husbandry Tropical Agriculture Commercial Plants 
F04 pages Medical Botany Forestry + -—=—Diseases of Plants 
William Wesley & Son, Booksellers, 
— 
More than 3300 works, 
classified under 42 
headings 
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