28th.—To-day I was admitted as a witness to the arcana of a field Court Martial, and of all the ridiculous farces in the name of justice, to excite mirth, indignation, pity, and disgust, commend me to a field Court Martial. I will not spoil the ludicrous impression left on my mind, by any attempt to describe the scenes I witnessed to-day. The grey goose has yet to be hatched which can furnish the pen capable of even approximating it. Oh, talent of Barnum! How does it happen that in all your searches after the wonderful and the curious, you have overlooked that nondescript of wonders, a field Court Martial? Strike quickly on this hint, and there is a fortune ahead.