LETTEK OF TKANSMITTAL. 
'J'keasuky Department, 
' ]\Iarine-Hospital Service, 
,, Washington ^ April ^5^ 1001. 
Sir; In May of lajst year a preliminary note upon ‘‘ The ViabiliU’ 
of the Baeillus Pestis" Avas submitted and published in the •‘Public 
Health Reports,” Vol. XV, No. 21. 
The work has l)een continued Avithout interruption in this lal)oratory 
since that time and I have noAV the honor to make a more complete 
report upon this important subject. 
During my al)senee in Europe this Avork Avas continued by P. A. 
Surgeon H. I). Geddings, IM. H. S. , especially in relation to food stuli's, 
. and his report is embodied in his own AAmrds. 
] 1 have also to acknoAvledge material help from Assistant Surgeons 
I Currie and Long in carrying on many details of the work Avhile they 
were stationed in the Laboratory. 
I I Respectfully, M. d. Rosenau, 
t " Director., llygicnic Laboratorg. 
' The Surgeon-General, 
U. S. Marine- Hospital Service^ 
Washington^ 1>. C. 
