We have the pleasure of welcoming another National organization of medical men. The medical officers of the militia of the several States have during the past few years grown into the habit of forming State societies among themselves. But it occurred to Prof. Nicholas Senn, Surgeon-General of Wisconsin, that the time had come to unite the medical officers of the militia into a National Organization. Accordingly, on his call, representatives from sixteen States met in Chicago September 18, for organization. In the morningthe gentlemen attended a brilliant clinic, held by Prof. Senn, at the Presbyterian Hospital, a gunshot wound very properly forming the subject-matter of the clinic. At noon, to the number of sixty, at the Union Club, they sat down to a delightful lunch, tendered them by the Faculty of the Chicago Policlinic, after which they marched, as befitted their military character, to the Chicago Policlinic, whose handsome amphitheatre,