10 
the commonly propagated race of this species is rather tender, 
less hardy in fact than C. Atlantica from northern Africa. 
Occasionally one hears of a plant or so of some tender perennial 
or woody species that has safely passed several winters far nort 
of its ‘‘hardy”’ line. A few people marvel at it, and it passes 
from notice. It may be the beginning of a hardier race. The 
writer expects to publish a much more detailed paper later. 
He will be glad to receive information bearing on any phase of 
this subject. Information concerning exceptionally hardy vari- 
eties or individuals of tropical, sub-tropical or warm-temperate 
herbaceous perennial or woody species is especially desired with 
full details of their history and age. 
LITERATURE CITED 
sae A. C. Winter cases of medium red clover strains. Jour. Amer 
oc. Agron. 16: 26 
eee pores DE. ‘One of cultivated plants. 2d ed. London, 
1904 
Gray, AsA. New manual of Boren (Revised by B. L. Robinson and 
M. L. Fernald.) New York, 1908 
KNnow.Lton, F.H. A catalogue of the ec and cenozoic plants of North 
America. Bull. 696, U.S. Geological Survey. 1919. 
MORGAN, . The physical basis of heredity. ” philadelphia, 1919. 
te H. J. Mutation. Eugenics, genetics and the family 1: 106-112. 
Proce H. H., and M. B. STRAU SS. en on toleration of tempera- 
re by Drosophila. Jour. Gen. Physiol. 6: 167-176. 1923, 
eee ALFRED. In ee aie ee of ite ae (L. H. Bailey, 
Ed.), under articles concerning the species mentioned. 1914-1916. 
SARGENT, C.S. The firs Pee ee of the Arnold Arboretum. Jour. Arnold 
Ar oe 3: 127- 
WiIEEISS J. cGy A Aes a ire flowering plants and ferns. 4th ed. 
Cambridge (Eng.), 1919. 
ANDRE PARMENTIER |! 
The practice of agriculture was one of the earliest and one of 
the most important forward steps in the advancement of the 
human race from barbarism to civilization, but the practice of 
! Address in accepting, on behalf of the Brooklyn Botanic Garden, a bronze 
tablet commemorating the horticultural work of André Parmentier, and 
presented by the Parmentier-Bayer Centenary Commission on Oct. 17, 1925, 
