(1) 
Phyfical Refleaions 
UPON A 
L E T T E Rr &c. 
Hat which I find moft remarkable in Mr, Denis\^ 
Letter, is firft^ the Transfufion of the Bioodof a 
Maugie Ddgitito a Sound one 5 to try whether' 
the Mapge would be communicated wuh the 
bloody the Mangie Dog is found cut'd ; and- 
the other who had received his blood, noE become Man- 
The next is the Experiment upon a Youth , who had for th® 
fpaceof above two Months, been tormented with a contuma^ 
clous and violent Fever 3 which (faies the Narrative) oblig'd 
bis Phyfirians to bleed him twenty times 3 in order to affiiaga 
theexceflSve heat* Before this Difeafe he was not obfcrvcd cq 
be of alumpilh dull Spirit,his Memory was happy enough, nod 
he feem'd cheerful and nimble enough of body : but fince the 
violence of this Fever, his Witfeem'd wholly funk, his Memory 
perfectly loft, and his body fo heavy and drowficj that he was 
not fit for any thing: to trouble you no longer with every 
particular of the relation J They opened his vein, and took a- 
bout three ounces of blood^fo black and thick, it could hardly 
form it felf intoathreed to fall into the Porreiiger; At the 
fame ^ime they brought aLambj whofe Carotir Artery was 
prepar'd 5 out of which, they emitted into the Young mans 
vein about three times as much of its -^r^mW blood, as he had 
emitted; 
