Since those disastrous times much, especially of late, has been done to preserve the health of the people, but much remains to be done, and, looking at the spirit in which the subject is taken up, and the arguments furnished from without to illustrate and enforce it, especially the urgent ones supplied by the daily lists of death from cholera, much more it is hoped, will be done speedily. If the legislature executive, and people at large would co-operate heartily and systematically, each doing their proper part to further the work—if stagnant fluids on and near the surface, and poisonous exhalations from decomposing vegetable and animal matter were prevented—if the dwelling places of the poor were sufficiently large, properly ventilated and cleansed, while the inhabitants conducted themselves industriously and morally, the effect, though it might not realize expectation, would unquestionably be great. The sanitary state of the people might then as far surpass that of the present time, as it does that of the fourteenth and fifteenth centuries: and this age in respect of health, would occupy a middle station between the dark ages which are past, and the practically enlightened age which is to come, and ought to come speedily. The _essential_ cause of cholera, and of other febrile endemics might be brought into existence, but without indulging in idle visions, it may be predicted that they would be comparatively harmless, in as much as they would be deprived of the concurrent, fostering agencies, from which they derive their prevalence, and chief instruments of destruction. And not only would cholera and other endemic diseases, whether prevailing epedemically, or occurring rarely, be checked and mitigated, but other forms of disease would be lessened, while constitutional health would be invigorated. Such great ends are surely worthy of great means zealously employed. POSTSCRIPT. 14_th_ _September_, 1849. IN addition to the 12 fatal cases of cholera recorded in the text, one occurred late on the 3lst of August. The subject was received at 6 P.M. of that day, in a state of complete collapse, and died six hours after admission. During the currency of the month there have been admitted 12 cases of cholera, two of which, being in a state of profound collapse, terminated speedily in death; 5 cases of bilious cholera which are doing well; 10 cases of febrile diarrhœa which are doing well; and one case of colic with spasms of the extremities. The number of cases of cholera, and of allied affections, excluding fevers, and adopting the nomenclature proposed above, between the 4th July and this date, are as under.