A FUßTHEK STUDY OF STATISTICS RELATING TO 

 VACCINATION AND SMALLPOX. 



By w. e. macdonell, ll.d. 



(1) The followiiig papor is a continiiiition of the Note publishcd in Biometrika, 

 Vol. I. No. 3, but I have beeu able to extend my lesults to a comparison of the 

 differential chaiacter of tvvo epidemics in the sanie city, and to some preliminary 

 cousideration of the intiuence of oceupatiou on the existence or non-existence 

 of vaccination and on the severity of a smallpox attack. My Statistical raaterial is 

 taken from : A Summary of Statistics relating to Vaccination and Smallpox as 

 observed in the Cases admitted to the City of Glasgow Smallpox Hospital, Belvidere, 

 hetween lOth April, 1900, and mth June, 1001, by Dr R. S. Thomson and 

 Dr Fullartou — a paper read before the Royal Philosophical Society of Glasgow oa 

 2ud April, 1902 — and from supplementary statistics relating to the same epidemic 

 kindly sent to me by Dr Brownlee, Physician Superintendent of the Belvidere 

 Hospital. The tables were prejDared, and the coefhcients of correlation with their 

 probable errors calculated in the same manner as in the earlier paper. I may 

 repeat that I use " mild " as equal to " discrete," and " severe " as equal to 

 " confluent " and " haemorrhagic." The few cases (only 2i per ceut.) of " doiibtful " 

 vaccination have been excluded from my tables. The following are my tables 

 for the Glasgow epidemic of 1900-1. 



TABLE I. 



;•= -6294 ±-0296. 



