Researches into the Nature of the Potato-Fungus. 241 
Fig. 2. — Conidiophore of Personospora arborescens, Berk. 
Conidiophore growing ont of the stoniate of the stem of Papaver somniferum. Linn. c. Four 
conidia still attached to the ends of the branch. Magn. 200 diam. 
Fig. 3. — Conidiophores of Phytophthora infestans. 
«. Formation of the first series of conidia at the tips of the branches. 5. First stage of the growth 
of the third series of conidia ; the tirst and second series have been pushed to one side, but 
are still attached to the swollen parts of the branch. Magn. 200 diam. 
VOL. XII. — S. S. R 
