APPKXPIX. 253 



(•mated Mom efUStfl has failed, while of those vaccinated directly 

 from the arm of B person Labouring under the disease, not more 

 than one in twenty has failed to take effect — when the disease 

 did not make us appearance titer vaccination, I have invariably, 



as t!: came under my examination, rev aceinated until a 



favourable result has been obtained. 



Of the different hands ()[' Indians vaceinateil, a large proportion 

 of the following have, as an actual examination has shown, under- 

 gone thoroughly the effects of the disease : viz. Sault Ste. Marie, 

 Keweeoa Bay, La Points, and Cass Lake, being seven hundred 

 ami fifty-one in number ; while of the remaining thirteen hundred 

 and BSrreuty-eight, of other bands, I think it may safely be calcu- 

 lated that more than three-fourths have passed effectually under 

 the influence of the vaccine disease : and as directions to revac- 

 einatc all those in whom the disease failed, together with in- 

 structions as to time and manner of vaccination, were given to 

 the chiefs of the different bands, it is more than probable that, 

 where the bands remained together a sufficient length of time, 

 the operation of revaecination has been performed by them- 

 sel\ 



Upon our return to Lake Superior I had reason to suspect, on 

 Dining several cicatrices, that two of the crusts furnished by 

 the surgeon-general in consequence of a partial decomposition, 

 gave rise to a spurious disease, and these suspicions were con- 

 tinued when revaccinating with genuine vaccine matter, when 

 the true disease was communicated. Nearly all those Indians 

 vaccinated with those two crusts, have been vaccinated, and 

 passed regularly through the vaccine disease. 



The answers to my repeated inquiries respecting the intro- 

 duction, progress, and fatality of the small-pox, would lead me to 

 infer that the disease has made its appearance, at least five times, 

 among the hands of Chippewa Indians noticed in the accompany- 

 ing tabic "f raccinauon. 



I SBaaU-pOl appears to have been wholly unknown to the 



Chrppewas of Lake Superior uuti] about 1790; when a war-party, 



of more than one hundred young men, from the bands resident 

 near the head of the lake, having visited Montreal for the purpose 

 of assisting the French in their then existing troubles with the 



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