H 



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A 



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P 



E 



C 



I 



E 



S. 



613 



fame fubjed;, hoping that they may in courfe of time become ufeful preser- 

 and interefting. I am befides fo well perfuaded of the candour, 

 humanity and zeal for encouraging every attempt which tends to 

 improve fcience, and to promote the benefit of mankind both in 



VAT ION 

 OF MARI 

 NERS, 



my friend Capt. Coo 



d 



learned prefident of the Roy 



Society, that I have not the leaft doubt of being not only abfolved 

 by them, of the charge of envy or a defire of rivalihip in the fame 

 career, but likewife of being commended for being emulous of be- 

 coming ufeful to mankind and perhaps the occafion of faving the 



f 



lives of many ufeful and necefiary members of fociety. 



I* 



w 



The moft common and at the fame time moil dreadful evil in- 



r- 



N 



fefting the crews of ihips fent 



on 



g voyag 



the S 



S 



which 



ding to the lafi obfervat 



of Dr 



Macbride, and thofe of Sir John Pringle is of the putrid kind. 

 Some authors have alligned the fea-air to be one of its caufes, but 



* 



it is impoffible to make good this alTertion, fince people living near 

 the fea, or in fmall illands furrounded by the fea and its air, enjoy 



their health as well as thofe who have inland habitations. 



Salt 



provifions contribute no doubt a great deal towards Spreading this 



L 



I 



difeafe in a fiaip, efpecially if they have been lying for a long fpace 



th 



mufl accelerate 



r 



of time in fait and are become putrid -, , i 



fymptoms and bring on a general putrefcence of the whole habit of 



S 



-- 



the 



/ 



