Mnnals of Botany 
, .#? Sv* i.;? * 
t v 4 *#> 
* #X* *> sV JP* 
^'KYV§. % i 
as.* , • . 
J i© j ©3 
i H--\ s 
M . C . Ferguson , del, 
FERGUSON. — FERTILIZATION 
IN 
PINUS STROBUS. 
