THE following extract from a letter written by an English Medical Officer, who has been serving in one of the hospitals in Bosnia, will prove interesting to our readers :-', The hospital is now filled with scurvy, dysentery, ague, and diarrhœa. The number suffering from scurvy that present themselves daily in the out patient room is quite appalling. We are quite close to the Servian and Montenegrin frontier, and within two days' journey of Ht'rz 'govina,.