P R E F ACE. 
These paj^es contain a sylla))us of the course in patliolooy and 
bacteriology given in this laboratory. 
The object of the course is to thoroughly equip ollicers of the 
Service in the techni([ue of pathology and bacteriology, in ordi'r 
better to lit them for the hospital, quarantine, epidemic, and public 
health work of the Service. Officers of the Service who have taken 
I 
the prescribed course arc thorouglily jmepared to make a scientihc 
diagnosis of plague, cholera, diphtheria, tetanus, tuberculosis, typhoid 
fever, anthrax, malaria, and other infectious j)rocesses, as well as to 
carry on original investigations for themselves. 
The course as outlined requires one year for its completion. The 
student-officer is re([uired to work (aich subject until he has mastered 
it before going to the next. Such deliberation permits a thorough- 
ness that is not possible Avhen work is hurried or limited to a sliort 
period of time. 
Special com'sex . — A spi'cial course lasting three months is sometimes 
given to officers of the Service. This course deals especially with 
clinical bactiudology and pathology, and consists of the following sub- 
jects: Microscopical jiractice, making of culture media, bacteriological 
techni(jue, the cutting and staining of pathological stiecimens, the 
study of tumors, the diagnosis of diphtheria, tuberculosis, chohu-a, 
tyiihoid fever, anthrax, tilague, and malaria; the bacteriological (‘xam- 
ination of water, and the princi|)les and t)ractice of disinfection. 
Another course lasting six months consists of the subjcnds as above, 
elaborati'd in many details. A more thorough study of th(' sapro- 
phytic bacteria is undertaken. A ra})id review of histology and gen- 
eral t)athology is given, jind it also includ(‘s a more d(‘taih*d study of 
the cultural and biological characteristics of tin' ])athogenic bacttu’ia. 
This course also includes the t('chni(jue of blood (‘xaminations and the 
diagnosis of the more common ainmal ])arasit('s. 
Modified courses are also t^iven to officers who come to the lab- 
oratory well (tualitied by pr(‘vious training in both ])ath(/logv and 
hacteriolotrv, but who d(‘sire to obtain tin* r(‘C(‘nt iindhods and 
improvements in these subj(‘cts, as w(dl as to d(‘V(‘lop tlnnr knowledge 
in certain brancln's that have a })ai‘ticulai' bcaii’ing u))on the ])ublic 
health. 
