BAKER ON A NEW SCIENCE,— THAT OF SANITATION. 



81 



Diphtheria, in Michigan inlX9/:-£*hibitingtheJver- 

 age numbers of cases and deaths fer . outbreak :- in all 

 outbreaks in uihich isolation, and pisinjection. were 

 both Jfeglected; and in all outbreaks in winch both were £n- 

 forced.( Compiled, in the office of the Secretary of the State Jtoard 

 gf/fealth,jrom reports mad e by local health officers. J 



rtii 



isolation and Disinfection 



Jfe gle c t e cL , 



Jl v e r a g e . 



Ssolation and Disinfection 



£ 77 jo reed. 



Average. 



Plate 53? 



11 



