In the employment of an anti-miasmatic principle and remedial agent, we feel ourselves abundantly sustained, by the concurrent testimony, of those English surgeons connected with the Medical Bureau in the department of India, whose numerous experiments and carefully detailed clinic cases occurring in the recent irruption and prevalence of the disease in that section, exhibit its utility in such a striking contrast with all former practice, as to leave no doubt as to its direct and specific action in the cure of cholera. It is in allusion to these experiments, and in answer to the question, what is deemed the most successful mode of treatment, that the learned Professor Maclean unhesitatingly observes, "Alkalies in the effervescing form, free stimulation of the surface, and chloroform in small doses, offer the best hope of relief." As this opinion comes from such high authority, and is compatible with the pathology of the disease, we may, without fear of controversy, add in conclusion, in any and every form of medication for the cure of cholera, we must not forget that chloroform is our sheet-anchor; and must be so combined and administered as to meet promptly the indications required. SECTION II.--PHYSIOLOGICAL CONDITION OF THE BLOOD. ITS NON-AERATION--NON-OXYDATION. In the preceding section we alluded to the suggestions and doctrines advanced by the learned Dr. C. W. Bell, Physician to the Manchester Infirmary, and late Physician to H. M. Embassy in Persia--and also to Dr. George Johnson, of Kings College, whose views and doctrines, relative to the Pathology, illustrative of the congestive character and non-aeration of the blood, coincide with those of Dr. Bell. A brief examination of their philosophy and doctrines will show very conclusively the first direct impression of the poison--the gradually altered condition of the blood, and the corresponding loss of nerve power--the impeded arterial circulation and the general tendency to congestion, as well as the altered condition and stagnation of the blood, especially during the stage of collapse. The question is asked, "What is the pathological explanation of this remarkable train of symptoms?" and the answer is given, "The one great central fact is this, that during the stage of collapse, the passage of blood through the lungs, from the right to the left side of the heart, is in a greater or less degree impeded." Very conclusive evidence as to the existence of impeded pulmonary circulation during life is afforded by the appearances observed in the heart, blood-vessels, and lungs after death.