Proportion of cases and deaths in each week during the month ending March 31:

Period. Cases on Cases Aggregate Deaths.

hand. occurring cases.

.

First week.

Second week.

Third week.

Fourth week.

Total.

April 1 to 6.

Period. Returned Remaining Percentage of

to sick. deaths of

quarters. aggregate cases.

First week. 30 170 . 1968

Second week. 20 270 . 0461

Third week. 35 269 . 1240

Fourth week. 49 270 . 0754

Total. 134 270 . 2463

April 1 to 6. . . . 274 . 0680

Vaccination. - I should have stated above that vaccination is strictly enforced. This operation is not as effectual as it should be owing to the inferior quality of the vaccine virus provided by the medical purveyor.

Hospital fund. - Abstracts of hospital fund for month ending March 31, 1864:

Balance due last month. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . $1,199. 68

Value of rations due. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5,226. 95

---------

6,426. 63

Value of rations issued. . . . . . . . . . . . . . . . . . . . . $2,994. 93

Purchases. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,959. 71

---------

4,954. 64

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Balance due. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,471. 99

These expenditures were judiciously made and were mostly for articles of diet not furnished by the prison ration.

NEW PRISON HOSPITAL.

When the order from the Commissary-General Of Prisoners arresting the progress of construction of these buildings was received by the commandant of the depot the executive building and the wester seven hospital barracks were nearly completed and the kitchen building had been commenced. Colonel Johnson at once directed that the work already under way should be completed and the erection of the eastern seven barracks be suspended to await further orders from the Commissary-General of Prisoners. For a full statement of the cost, &c., of these buildings in their present condition and the cost, &c., completed, I have to refer to the several reports from the surgeon in charge, depot quartermaster, and commandant of the depot, already forwarded to the office of the Commissary-General of Prisoners.

This building was not directed by me as being called for by the extra-ordinary requirements of a temporary occasion, but as the regular prison hospital for the average number of sick occurring in the prison with an average number of inmates under ordinary circumstances. The new building is designed to accommodate 560 beds)14 wards with a complement of 40 beds each), which number might under extraordinary circumstances be increasing by crowding to 700. This is but a fair like this, an average of at least 8 per cent. of hospital sick must be expected and provided for, together with the necessary nurses and attendants. There are now 335 sick in hospital (excluding 355 sick in hospital (excluding smallpox) and 683 in quarters,