NEW AND CORRECTED NAMES OF CERTAIN 
MILK BACTERIA* 
W. D. Frost and Ruth Chase Noland 
We are not aware that there is anywhere a list of the bacteria 
that have been found in milk later than that of Conn, Esten and 
Stocking (1906). Since then, many species have been recognized 
and some new ones described as occurring in milk. Furthermore, 
the Society of American Bacteriologists, through their Committee 
on Characterization and Classification (1920), have so modified the 
genera that many species will have to be renamed. Few bacteriol¬ 
ogists have ever bothered with synonyms so that there is really 
very great confusion in names. This is perhaps especially true 
with dairy bacteria because of the wide use of Conn’s list in which 
he has paid little attention to synonomy and made general use of 
the unscientific trinomial system of nomenclature. 
The adoption by the Society of American Bacteriologists of rules 
and a definite system of classification makes for progress and it 
would seem that the time is now ripe for an attempt to list the 
milk bacteria and assign to them the correct names. 
Such a task is a long and difficult one and perhaps is only likely 
to be done piece-meal, yet if the work is carefully done, it should 
be welcomed and valuable. 
We list below a number of species in which the usual names have 
been changed or new ones supplied because of the application of 
the priority rule and those that have been changed from one genus 
to another: 
New Names 
Bacillus involutus (adametz) 
B. No. 15 y ADAMETZ, 1889, Landw. Jahrb. 18: 247. 
Bact. turgidnm Chester, 1901, p. 195. 
Note: This is now a bacillus but the name iurgidus used by Chester is 
invalid because Duclaux has previously used the name. See Mace, 1897, p. 
900, also Migula, 1900, p. 586. 
*Published by permission of the Director of the Wisconsin Agricultural Experiment 
Station. 
