132 BOTANICAL GAZETTE. 
- ; ally accepted 
and other writers had associated it. At the present time the ge ae ai 
view of the relationship of the Ranunculi mcidia is as follows: 
belongs to . dactylidis; 
S acris belongs to ig dactylidis; 
“ ulbosus belongsto  “ dactylidis. 
Ww i jmen- 
ast two years conducted a series of exper 
tal cultures with the Ranunculi excidia. 
Bio 5 that of 
plete, but I have evidence that there are two ecidi: : (1) 
i , but is con- 
reason to believe, does not occur on R. re 8, 
eos : . hich 
fined to R. b The ecidium on R. acris has a distinct life mE piss 
I am at present endeavoring to work out.—CHARLEs B, PLowRIGHT, 
Lynn, England. 
com- 
Variation and Human Interference.—Mr. Evrror—In reply to the 
munication on p, 98, signed A. G, i 
ai ae 
ogical variation. Quoting from my oe 
AZETTE, “Tt seems to me that where 
the agency of man induces numerous varit- 
tions favorable to m . 
variations in a species, of a kind favorable to man, indicates a previous agency 
of man.” 
I might perhaps have ended m 
yet I much believe that I ha 
haps, upon investigation 
plants or escapes, and 
yY communications somewhat more plainly e 
ve given prominence to an idea which wee 
» Prove useful, It will be admitted that we part 
Wild plants or indigenes. Some years since M. Bt 
ing of the wild carrot and parsnip; it is said he 
ceeded with the carro Professor Buckman, in trying like expen a 
d make no impression upon the carrot. that 
ms a plausible explanation of the difference ‘ki 
the one ¢ menced with a feral, the other with a wild plant, and hence bh 
divergence in the results. Should extended trials prove the correctness of SU 
