217 
preparation by the home process. The conclusion reached shows a cost 
of only $2.25 per acre when the verdigris is of home manufacture. The 
question of danger in its use is answered by reference to analyses made 
of grapes sprayed with the mixture, showing only an infinitesimal quan¬ 
tity present in the wine, and also to the medical works of Dr. Pecho- 
lier and Saint Pierre, which go so far as to say that when taken in small 
doses the acetate has a decidedly beneficial influence upon the human 
system. 
From the inexpensiveness of the material, 20 to 30 cents per pound, 
when it is remembered that only 5 to G pounds are sufficient to spray 
one acre, the ease with which it may be prepared and applied and its 
decided efficiency, evinced by such a series of experiments as are con¬ 
tained in these reports of Mr. George Beucker, it seems worthy at least 
of a thorough trial among the vineyards of this country.— David G. 
Fairchild. 
Dietel, Dr. Paul. TJeber Rostpilze , deren Teleutosporen kurz nach 
Hirer Reife keimen. Botanisches Oentralblatt, 1889, Nos. 18-20. 
Dr. Dietel attacks the well-known Lepto and Micro sections of the 
genera of the Uredinece aud says no such division can be made either 
on a morphological or biological basis. He cites examples of species 
belonging to other sections whose teleutospores also germinate imme¬ 
diately after ripening. He recommends instead of the Lepto and 
Micro sections one section whose distinguishing character should be 
the formation of teleutospores unaccompanied by any other form, aud 
that this should have two subsections with the same distinguishing 
characters that now mark the two main ones. 
The species belonging to the Lepto-section of the Uredinece are dis¬ 
cussed according to their hosts, aud in many cases the union of species 
generally considered as distinct is suggested; among these suggestions 
are the following: 
Puccinia malvastri , Pk., is undoubtedly identical with P. sherardiana , 
Korn., aud the latter name, being the older, should be adopted. The 
group of Uromyces attacking the Malvacece should probably be much 
reduced in number, but at least one true Lepto-uromyces must exist. 
Puccinia mesnieriana, Thum. on Rhamnus alaternus in Portugal is iden¬ 
tical with P. digitata on R. croceus from California. 
P. saxifragce , Schlectd., P. curtipes , Howe, and P. striata , Cke., are 
probably identical, and P. saxifragce is a Lepto-puccinia. 
P. chrysosplenii , Grev., P. spreta , Pk., and P. congregata , E. & H. 
differ oidy in minor points, so that it is impossible to consider these 
species with which P. tiarellce , B. & C., and P. heucherce , Sell., should 
probably be included as strongly distinct from each other. 
He considers P. asteris as the type of Puccinia on CoinposiUe and notes 
the following as agreeing with it more or less perfectly : P. vomica , P. 
serratuice, P. subtecta , P. Printzice , P. gerardii , P. xantliii , P. silphii , 
and P. grindelice. 
