PLATE 33 



Isolations from sections of halo lesion. The lesion was from an artificial inocula- 

 ion with oat stock organism made February 25, igi8. Isolations were made March 

 13, 19 18, on potato agar. The sections were dipped in alcohol and then submerged 

 for one minute in i to 1,000 mercuric chlorid. The plate from section c is the only 

 one showing colonies of bacteria. 



A. — Poured plate of isolation from section a of lesion. 



B.— Poured plate of isolation from section b of lesion. 



C. — Poured plate of isolation from section c of lesion. 



D. — Poured plate of isolation from section d of lesion. 



E. — Poured plate of isolation from section e of lesion. 



Photographed March 15, 1918. 



