10110. (letter) Head Qrs. Sub District of Prescott, Camp Whipple, A.T., January 21st, 1868, To R.M. O'Reilly, Asst. Surgeon U.S.A.

Head Qrs. Sub District of Prescott Camp Whipple, A. T. January 21st, 1868 To R.M. O'Reilly Asst. Surgeon U.S.A. Sir: Bvt. Brig. Gen. Commanding the Sub District I am directed by the statement for your information . to make the following McPherson during the past season was and is The sickness at Camp impure water being used for drinking and no doubt caused by is the intention of the General to filter cooking purposes . It in order as far as possible to preserve the and purify the water health of the Command . Dr. Cutbush apparatus reprinted in the following diagram is probably the best that can be constructed: for particulars see fig. 12 page 243 Hammond's Hygiene. Two (2) tanks of forty ( 40) Galls. each for the men and one of forty (40) Galls. for the Officers with the necessary troughs will with proper care and attention it seems to me answer every purpose. The A. Q -M. is authorized to construct the number above specified and in accordance with the enclosed diagram a copy of which you will please furnish him with request that they be completed with the least possible delay. You will report at once to these Head Qrs. whether they the tanks as above allowed is in your opinion sufficient in number to furnish the Post a full supply of good water, also any unnecessary delay in their com— pletion You will also make a request on the Commanding Officer to pre— pare the necessary amount of Charcoal from the Willows growing in your vicinity to be used as a purifier. Should there however be other varieties of wood accessible which in your judgement would make better Charcoal than that prepared from the Willows you are authorized to use the same. You will see that the tanks are covered and will suggest in your report any change that may in your opinion be beneficial . Very respectfully , Your obd 't. servant, P. Middleton, Asst. Surgeon U.S.A. Chief Med. Officer Sub Dist. of Prescott.