Below you'll see a transcription of the letter with a small graphic of the page that links to the full sized scanned image. Where the writing seems illegible, you'll see a line in the word or letter's place. If there's a little doubt about a word, phrase or letter you'll see it italicized.
Navy Department
Bureau of Medicine & Surgery
Dec. 8th 1873
My dear Doctor:
Captain Johnson has mentioned that you desire an appointment as Acting P___ Ast: Surgeon U.S. Navy. Should you desire to enter the service again in such a capacity if you will make an official application the probabilities are you will get the appointment as I have mentioned your name as an applicant.
The fact of your having been in the service does away with any professional examination. If you can, decide this at ___,
Sincerely Yours -
(Illegible Signature)
Dr. G.B. Todd,
427 W. Fayette St.
Baltimore, Md.
The left image above is as the scan appeared when I received it. The image on the right is how it looked after I optimized it.