Walker Prises tn Natural History 
Y the provisions of the will of the late Dr, William oo Walker two prizes are annually offered by t the 
B oston Society of Natural History for the best memoirs written in the English language, on subjects 
ooaeaed by a Commition appointed by the Eiders 
For the best —— presented a prize of sixty dollars vy be awarded ; H, ech et the memoir be one of 
marked merit, the amount m y be increased to on e hundre d do llars, at th 
t od en a dollars eT be awarded, 
Dp - Pe | ) Re 4 A 
The conaention for sé pre not r cted, but ts open to all, 
rE is ‘especially cele - the ices a 
In all c o be based ona considerable body of original and unpublished work, accom- 
panied by a pasion ys review gery the ‘literat f th 
nything in the memoir which shall furnish nae of the identity of the author shall b idered as deb 
ring tie essay from eee J 
. Prefer will ven to memoirs showing intrinsic evidence of being based upon researches made directly 
in 
v the pr ize 
4. Ka eats must be accompanied — a sealed envelope oe the author’s name and superscribed with 
m co orrespondin e born e by the anuscript, and must be in the hands of the Secretary on or before April 
ist of the year tor Ay 
. The Society assumes no posh for publication of manuscripts submitted. 
_ SUBJ ECTS FOR 1907 
nt or group of fossil plants 
Ee Be A fF : os] pla 
2, The development of ~ eamciophyis in any ie Poop representative 0 of the Coniferales. 
osper: 
3. The anatom _ dev of some orde er oO of the 
4. The ianelink h other 
5. The habits and arlaeenere Po any a ale oi the vreau 
6, A contribution to a knowledge of the wpe speed at which spt travel. 
SUBJ} Ts ah ada 
1. An Sena s vrand of inheritance i in sera orp 
2. ding in animals or plants, 
3- A study relation to habit formation, : 
4A Physiological vn of one ye" several) species ith respect to leaf variation. 
5. F ertiliz and r elat ed phen nome na in ee, Sr amus plan 
6. Wh l gr rowth is ‘represented i in the winter bud? 
7. physiographic study of the f aried shore line. 
8. A problem uctural geolog 
g. A our =p one or more geological horizons with | a view to determining the different conditions obtaining a 
one time over a large area, as recorded b 
Boston Socigty or Nat ISTORY 
Beeen, Wace, 18 4. GLOVER M. ALLEN, Secretary. 
ae 
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