A few observations on the trenching of Night-soil,by Dr. JAHAR LAL DAS,L.M.S.,D.P.H.,Personal Assistant to the Director of Public,Health,Officer-in-Charge of the Public Health Bureau,Bihar and Orissa,and Health Officer to the new town of Patna. (Member.)

A few observations on the trenching of Night-soil,by Dr. JAHAR LAL DAS,L.M.S.,D.P.H.,Personal Assistant to the Director of Public,Health,Officer-in-Charge of the Public Health Bureau,Bihar and Orissa,and Health Officer to the new town of Patna. (Member.)