CATALOGUE OF PLANTS. 617 
SPIRILLUM, Hhrb. 
S. Undula (Miill.), Ehrb. 
In bog-water and various infusions. 
MICROCOCCUS, Cohn. 
M. luteus, Cohn. 
On boiled potatoes, etc. 
M. aurantiacus, Cohn. 
On boiled potatoes, etc. 
M. uree, Cohn. 
In urine. 
M. crepusculum, Cohn. 
In various infusions and decomposing substances, accompany- 
ing Bacterium termo. 
M. vaccine, Cohn. 
In vaccine virus and the pock-pustules of small-pox. 
M. diphtheriticus, Cohn. 
Accompanying diphtheria. 
M. septicus, Cohn. 
In wounds, accompanying pyemia and septicemia. 
M. amylovorus, Burrill. 
“The cause of blight in plants, especially of pear and apple 
trees,” * 
M. toxicatus, Burrill. 
“Apparently parasitic on species of Rhus (Poison Oak, Poison 
, Ivy), and constituting the poisonous principles of these plants.” *’ 
The list of foreign plants introduced on ballast grounds at Cam- 
den, Communipaw and Hoboken, printed in the Preliminary Cata- 
logue, is not republished, as many of the species have long ago dis- 
appeared from those localities. 
* Burrill, J. ¢., p. 42. 
