226 The Botanical Gazette. thea: 
Fig. 8. View of the syagcege at the micropyle as seen in the longitudinal 
median section of the co x32 
ig. 9. Transverse pectic of coats, c., in the middle region of pei 
the corn. The line of compacting in the ovary wall has formed, t 
cells are freed, ea inner integument is compressed, the pcs al of t the nu- 
cellus remains. 
PLaTeE X Transverse section of a coats of the corn grain at 
wer soe co treatment vith cold potassic hydrate. X 400 
Fi ansverse section through the coats of the mature oat grain show- 
ca the union of the — cells of the ovary wall with the inner 
The layer to the left of 7 is the inner integument; to the right, the ep 
deri - the eae x ae 
E Dranivetes section of the inner coverings of the mature wheat grain, 
rk union of the Aves Siti cells of the ovary wall with the inner Sage 
ment after — tw 
13. Sorverin. settee cn the coverings of the mature wheat grain. 
X 465. 
Contribution to the biology of the organism causing 
: leguminous tubercles. 
GEO. F. ATKINSON. 
WITH PLATES XII-XV. 
[Continued from p. 166. ] 
Historical resume. 
Early period of ‘ee 
perpusillus. a 
ivona® took them to be fungi of the genus Sclerotium 
ened two types, the simple ones as S. lot tine 
€ lobed ones as S. medicaginum. Persoon’s wee 
ehivinan: ° was also founded upon certain of these tu 
Fries! rejects Persoon’s S. rhizogonum referring the forms 0 
®Les tubercles —— des Légumineuses. Ann. d. Sci. Ag nae 
etetrang. 1888. p. 9 
*Histoire générale oe plantes. 1615. 
“Prodromus Syst. Nat. Reg. Adsce m1 (1825). 312. 
*Pugill. plant. rar., Siculze 
Traité sur les iesces siascaiblas Paris. 1818. 
"Systema Mycologicz, 11. 250, 
