OFFICE OF CHIEF SANITARY OFFICER, Ancon, Canal Zone, April 10, 1907. SIR: I herewith forward report of the Department of Sanitation for the month of March, 1907. The report shows in general an excellent condition of health on the Isthmus' The number of men constantly sick among the employees has been steadily dropping since August, 1906. In August we had 33.72 men out of every thousand sick every day in hospital. This has'steadily fallen, month by month, until March, 1907, when we have for this figure 19.40 men. In other words, we had among the employees in March very little over half the sickness which we had in August, 1906. This is slightly lower than our sick rate for March, 1906, when we had 19.65. This is an excellent sick rate and about as small as we ca hope ever to get it. Among our 4,600 American whites we had only 2 deaths from disease, which would give us a rate for the year of 5.1.7 per thousand. Among our 1,200 American women and children living in comm~isSion quarters we had no deaths and 'very little sickness of any kind As has been the case for the last year, pneumonia was the disease which caused the principal mortality. During March it caused 53 deaths among our employees, and these 53 deaths were all among our negro employees. As in most former reports, the negro employees show the highest mortality and the American whites the smallest. This mortality for March was: For negro employees, 48.50; white employees, 15.69; American white employees, 10.34. During the month we had -no quarantinable disease. The last case of yellow fever occurred in May, 19906. Very respectfully, .CGRA, c L C. GOssG0, Chief Sanitary Officer. To the CHAIRMAN ISTIIMIAN CANAL COM-MISSION, Culebra, C. Z. (3)