4*6 DISEASES OF SENSATION. SECT. XXXIII, 2. 



" The above experiments were made with blood 

 taken from a fmall vein in the hand or foot of three 

 or four different patients, w^om I had at that time 

 under inoculation. They were feleded from 169, 

 as having the greateft number of puflules. The 

 part was wafhe.d with warrn water before the blood 

 was taken, to prevent the poffibility of any inatter 

 being mixed with it from the furfa.ce. 1 * 



Shall we cpnclude frpm hence, that the variokms 

 matter never enters the blood-veflels ? but that the 

 morbid motions of the veffels of the {kin around the 

 infertipn of it continue to increafe in a larger and 

 larger circle for fix or feven days; that then their 

 quantity of morbid a&ion becomes great enough to 

 produce a fever-fit, and to affect the ftomach by 

 afibciation of rnptions ? and finally, that a fecond 

 aflbciation of motions is produced between the flo- 

 mach and the other parts of the {kin, inducing them 

 into morbid aclipns iirnUar to thofe of the circle 

 round the infertion of the variolous matter ? Many 

 more experiments and obfervatipns are required be* 

 fore this important queftion can be fatisfadority 

 anfwere.4' 



It may be adduced, that the matter inferted into 

 the ikin of the arm frequently fwells the lymphatic; 

 in the axilla, that in that circumftance it feems to 

 be there ^rrefted in its progrefs,, and cannot be ima- 

 gined to enter the blood by that lymphatic gland 

 till the fwelling of it fubiides. Some other pbseno- 

 mena of the difeafe are more eafily reconcileable tot 

 this theory of fympathetic motions than to that of 

 abforptior\ ; as the time taken up between the in- 

 fertion of the matter, a,nd. the operation of it on the 

 fyilem, a$ mentioned above. For the circle around 

 the infertion is feen to increafe, and to inflame; and 

 I believe, undergoes a kind of diurnal paroxyfm of 

 torpor and palenefs with a fucceeding increafe of 

 adlion arid colour, like a topical fever-fit. Whereas 



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