4      ANNUAL REPORT OF THE IMPERIAL BACTERIOLOGIST

electrical pumping from a point some 1,200 feet below the
level of the Laboratory.

    11.  Electric Centrifuges. Some of the old condemned
centrifuges have been kept running throughout the year by
constant attention and repair, but the risk has been consider-
able ; at the close of the year under report three only re-
mained in workable condition but none are likely to last very
long.

    Three of the new centrifuges have been delivered and are
now awaiting erection.

    12.  Supply of Hill bulls and Plains animals. There was
no change in the arrangements for obtaining hill bulls and
plains animals, nor was any difficulty experienced in procur-
ing them.

    13.  Bareilly Branch Laboratory. As usual the Branch
Laboratory remained open for about five months during the
winter season.

    In addition to the routine work of testing sera and
vaccines, examination of specimens, etc., investigations were
carried out in connection with Blackquarter, Anthrax,
Strangles, and Tuberculosis of cattle.

    During September 1915, the Imperial Pathological En-
tomologist deputed one of his subordinates to collect biting
flies at Kathgodam and with his help up to the end of
December, a series of experiments were conducted on the
transmission of surra by certain of these flies.

    Work on the construction of the new branch laboratory
at Izatnagar has been delayed owing to the total cost of
the project having been found to be excessive under the pre-
sent financial conditions. A revised scheme on more humble
lines has been suggested and the estimates for this are under
preparation by the Public Works Department.

    14. Tours. In November 1915 and again in March
1916, I visited the Army Remount Depôts at Mona and