9S GREASE, 



portional, cannot be denied : these positions 

 being admitted, it certainly shall follow, the 

 less the weight or substance, the less must 

 be the force required to give it motion : this 

 force is retained in the contracting power of 

 the vessels acting upon their own contents 

 exclusive of the assisting muscular compres- 

 sion mentioned by the author above quoted, 

 which (in the system of circulation) can only 

 prove the secondary consideration. I do not 

 mean to enter into tedious and unentertain- 

 ing disquisitions upon the laws of iiature and 

 motion, but hope (and naturally conclude) 

 every reader will coincide with me in one opi- 

 nion — that these vessels are as fully ade- 

 quate to the offices assigned them in the ex- 

 tremities, as those whose capacities have 

 fixed them in the more noble parts. 



This truth being allowed (as by every in- 

 telligent reader it must be), I consider na- 

 ture totally exculpated from the accusation 

 of insufficiency in the execution of her own 

 laws ; and doubt not, in the investigation of 

 the subject, we shall be able to produce more 

 satisfactory reasons for the appearance and 

 progress of this disease, than any we 



