Geology and Natural INstory. 315 
his experiments on the connection of certain ecidial and teleuto- 
sporic forms of Uredines. His experiments were started in 1881 
with cultures of the spores of Heidium Berberidis on wheat; but 
as Uredo linearis, which is the uredo-stage of Puccinia graminis, 
es the wcidial spores, the control plants remaining healthy, 
ut he reversed the experiment and produced Xeidi 
ridis by sowing the Puecinia spores. He also sowed the spores 
ing the views of continental writers as to their secondary forms, 
sia one instance producing a Puceinia not before known in Britain, 
and in the case of Uromyces Junci showing the relation to 
Eeidinm zonale which was suspected by Fuckel. 
© writer, since DeBary, has shown more successful results 
: ‘ss 
e 
and Puccinia graminis, especially in this country, has been that 
the Puceinia is ve y comm stri re the barberry is 
tnknown, and according to DeBary the Puceinia spores cannot 
be made to germinate and grow upon grasses. Plowright, how- 
ever, was able, in a limited number of ; ke th 
cinia spores grow upon wheat, especially on young seedlings. 
Western States, 
&’ccount of a German traveler, Schoepf. 
of Professor J, B, Ames, of the Harvard Law School, I have been 
