I have no idea what "This spaa is also cribriform..." but that's what the letter says.
Surgeon General’s Office
Washington City D.C.
Jany 30th 1866
About 12th September 1865, there was received from you, from Santa Fé, a cranium which has been given the number 4385, in the surgical section of the Army Medical Museum. The specimen shows a discolored surface of six inches by four over the superior anterior portion of the frontal bone. This spaa is also cribriform – No history accompanied the case, and it has been suggested it was one in which scalping had been practiced without immediately fatal results. You are earnestly desired to transmit such notes of the matter as you may possess.
Your obedt. servant,
By order of the Surgeon General
[George A. Otis]
Surgeon & Bvt. Lt. Col, U.S. Vols. Curator, A.M. Museum
Bvt Major H.E. Brown,
Assistant Surgeon U.S. Army at Hart’s Island, N.Y.H. [New York Harbor]
Care of Medl. Dir. Dept East, New York