ih 
The hypothesis is by no means an unthinkable one, but its 
lausibility must not make us accept it. In the first place 
ere 
mp oe and we cannot cast off our old views at a moment’s 
S F \ 
Mie Then again we have seen the mycelium, but we have 
a ge at any rate—ever seen this mycoplasm. 
not-—most or us, : cards 
Eriksson has selected for its demonstration certain varieties of 
LTIRSS bs 
ie Eee ee . ae ree 
\Wheat which are year by year affected in Sweden with Pucczuza 
, - ; Ty 
Jumarum, notably Horsford’s Pearl Wheat. Some of it was sown 
‘n October, 1902, and when the seedlings had attained a height of 

GARE CHREN 
FIG 1*—A TO E, SHOWING THE MYCOPLASM FROM ERIKSSON’S 
MGURES;. LAB BR: 1th 
A—Tab. i., f. 2, b—Cell of Wheat seedling with mycoplasmic contents 
containing two vacuoles. 
B-Tad.i., f. 5.—Three cells of little older seedling, showing one cell filled 
with mycoplasm, another partially filled, and the third quite devoid of it. 
Oe Cee f. 11, c.—Mass of mycoplasm between the cells of Wheat leaf 
In the month of July, taken from the periphery of an area containing sori 
of Uredo glumarum. About 4-6 mm. beyond the outer sori, the mass fills 
the interspace between five cells and is sending prolongations between them. 
D—Tad. ii., f. 11, a.—Extension of plasm between the cells’ granular 
Contents more obvious, including membrane scarcely apparent. 
; E—Tad. iii., f. 14.—Further stage, the mass of mycoplasm has become 
invested with a distinct membrane, of which the double contour is apparent ; 
ma ie has formed. Clearer area is seen around some of the larger 
Tanules, 
* Reproduced by kind permission of ‘‘ The Gardeners’ Chronicle, Ltd.” 

