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Medical Officers of the Army of India.

Name.	Nature of anopheles infection.	Date of inoculation.	Number of inocula- tions.	Name of person from which anopheles was in fected.	Result.
C. F. Fearnside	(1) Spring-ter- tian.	27th December 1900	2	C. No. 2471	Successful. Spring-ter- tian ague from 14th January 1901.
		1st January 1901	2
		8th January 1901
	(2) Aestivo-au- tumnal cre- scents.	10th January 1901	1	C. No. 2116
	(2) Aestivo-au- tumnal cre- scents.	12th January 1901	2	Ditto	......
		11th January 1901	2	Assistant Jailor R. Achari, C. T. Mullings, Esq., Assistant Engineer, D. P. W.	Results-negative owing to treatment of the spring-tertian attack by quinine.
		14th January 1901	2	......	No second attack of fever to date, 26th January 1901.

For easy reference Table II has been compiled and hence it will be unneces-
sary to go much into detail regarding the cases. Of the eight persons inoculated,
six have contracted fever and the last two"Mr. Mitchell and Hospital Assistant
Ramaswamy Nayudu"have yet 10 days before the incubation period is completed.
(The Hospital Assistant has since developed fever.)

Case I.— My own medical history might be called good.

In 1891 I suffered for nine months from æstivo-autumnal malaria accompanied
in the last stages with " black-water " fever. After being invalided to England
for nine months I made a complete recovery, and although I have served in the
most malarious places in Burma (Chin Hills) and Madras (Cuddapah) I have
never again had fever till my recent attack. I have invariably slept under mos-
quito curtains and my immunity to fever must be due to this fact.

The first inoculation was on 29th December 1900, and a second and third on
1st January 1901 and 8th January 1901, from an anopheles fed on blood contain-
ing spring-tertian parasites. On the 14th of January I developed fever with the
usual symptoms of ague. On the 13th and 15th no parasites were traceable in the
peripheral blood. On the 18th, while working at the microscope, I felt chilly with
pains in my-joints; so I examined my blood which now contained spring-tertian
parasites. The temperature chart is attached shewing the tertian type of ague.

Though not suffering from actual fever at present, 27th January 1901, I still
feel very unwell, due most probably to the later inoculations of crescentic-derived
sporozoites.

Case II.— Head Warder Swami was inoculated on 28th December 1900, from
an anopheles fed on the same blood as the previous case. He is a strong well-
built Telegu and has been well all the year. On the 18th January 1901 he
developed fever and his blood disclosed spring-tertian parasites.