288 



ANNALS OF THE MISSOURI! BOTANICAL GARDEN 



[Vol. 6 



SERIES C 



INOCULATED OCTOBER 1, 1916. SAMPLE FROM MISSOURI BOTANICAL GARDEN, 

 HOLE IN CENTER OF LINNEAN HOUSE. SURFACE STONY AND MOIST; FILLED 

 IN TO 20 CM. WITH CLAY, LIME AND BRICK; 20-40 CM., A MIXTURE OF 

 CLAY AND HUMUS; 40-100 CM., GRADUAL CHANGE FROM CLAY TO VERY 

 FINE CLAY. CULTURES C3 AND C3' WERE TAKEN IN A TAR-LIKE STRATA; 

 DEPTH LIMIT 100 CM. 



Ser 



c 



c 



c 



c 



// 



Depth 



Jan. 14, '16 



Surface 





Surface 



P. viride 

 U. variabilis 

 \S. bacillans 



Surface 



1 



10 cm. 



V 



10 cm. 



2 



20 cm. 



2' 



20 cm. 



3 



30 cm. 



3' 



30 cm. 



4 



40 cm. 



4' 



40 cm. 



5 



50 cm. 



5' 



50 cm. 







60 cm. 



P. viride 



Mar. 25, '16 



Aug. 22, '16 



Nov. 10, '18 



Ulothrix varia- 

 bilis 



Stichococ-cus 



bacillaris 



P. viride 

 U. variabilis 

 S. bacillaris 



P. viride 



P. viride 



P. viride 



P. viride 



Protodcrma vir- 



P. viride 



ide 



S. bacillaris 



S. bacillaris 



Trochisciat 



U. variabilis 



U. variabilis 



Trochisciat 



(plasmolyzed) 



P. viride 



P. viride 



S. bacillaris 



U. variabilis 

 Trochisciat 



P. viride 

 S. bacillaris 

 U. variabilis 

 Trochisciat 



P. viride 



P. viride 

 U. variabilis 



p. 



viride 



p. 



viride 



p. 



viride 



p. 



viride 



p. 



viride 





p. 



viride 









p. 



viride 



p. 



viride 





P. viride 



P. viride 



P. viride 



P. viride 





P. viride 



P. viride 

 U. variabilis 



P. viride 



P. viride 



P. viride 



P. viride 



S. bacillaris 



P. viride 



