PLATE CXV. 
Fig. 3. — The Artotrogus of Montagne and Berkeley. Fig. 4. 
Enlarged 400 diameters. Peronospora umhelliferarum, 
Oogonia and Antheridia 
enlarged 400 diameters. 
Fig. 5. — Peronospora mfestans. 
Oogonia and Antheridia from badly diseased leaves of Potato, after a week's maceration 
in water; enlarged 400 diameters. Antheridium -r^^-^ = -0004 inch. 
Oogonium ^^^^ = '001 inch. Coat of Cellulose A_ -00142 inch. 
K 2 
