The Bureau of Vital Statistics registers and makes statistical
studies of all births and deaths, marriages, and divorces occurring in
Maryland; licenses and registers midwives and regulates the trans-
portation of the dead. It also maintains a service for issuing certi-
fied copies of certificates of births and deaths. On registration of
births, certificates are sent to parents of all children born in the
counties of Maryland and cards certifying to the date of birth are
furnished for entrance to school and for work permits.

Arthur W. Hedrich, Sc. D.. Chief, Baltimore.

The Bureau of Communicable Diseases receives daily reports
from Health Officers of communicable diseases; investigates out-
breaks of diseases and directs measures for their controll; enforces
the laws on the notification of reportable diseases and the smallpox
vaccination law; aids in maintaining tuberculosis clinics and keeps
a separate and confidential record of all cases of tuberculosis and
of venereal diseases; maintains venereal disease clinics, directs med-
ical inspection of public schools and investigates nuisances. The Divi-
sion of Epidemiology and the Pasteur Division are under this Bureau.

C; H. Halliday, M.D., Epidemiologist, investigates the occurrence,
distribution and type of communicable diseases in individuals and
communities in the counties of Maryland, in order that measures for
the control of such diseases may be instituted. The Division studies
the sources and routes of infection, assists local health authorities
or family physicians in the diagnosis of communicable diseases, assists
in finding unrecognized or unreported cases and advises in regard
to the proper method for the collection of laboratory specimens. The
Chief of the Division also assists in diphtheria, typhoid fever and
smallpox immunizations when the latter cannot be done by private
physicians or by local health officers.

C. W. G. Rohrer, M.D., Ph.D., Diagnostician, aids in the diagnosis
of communicable diseases, notably those of the exanthematous group.
He acts in an advisory capacity to medical inspectors and other physi-
cians in matters 'pertaining to the prevention and further spread of
such diseases. He is in charge of the Pasteur Division and admin-
isters the Pasteur treatment. He also classifies deaths by nature
and cause, recording essential data missing from original certificates.

R. H. Riley, M.D., Director and Chief of the Bureau of Communi-
cable Diseases, Baltimore.

C. H. Halliday, M.D., Epidemiologist and Assistant Chief of the
Bureau of Communicable Diseases, Baltimore.

The Bureau of Bacteriology assists physicians and health officers
in the diagnosis and prevention of communicable diseases; assists in
the prevention of maternal mortality by the examination of urine
specimens from prenatal cases; determines the bacterial quality of
drinking water, milk and other foods; examines annually many
samples of water and oysters for the protection of the public health
and the oyster industry of Maryland; tests the efficiency of operations
for the purification of water and disinfection of sewage.

The Central Laboratory is located at 2411 North Charles Street,
Baltimore City, with Branch Laboratories at Cumberland, Hurlock,
Frederick, Hagerstown and Rockville.

C. A. Perry, Sc. D., Chief Bacteriologist, Baltimore.
The Bureau of Chemistry determines the sanitary quality of
drinking waters, milk and other food substances; determines the
legality of drug products and pharmaceutical and medicinal prepara-
tions sold to the public; assists in testing the efficiency of operations