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xxxi ] 











A 



n#t to be admired, that the Jludy of Natural Hijlory 



have continued fo long 



gleSied, 



an 



tn 





tfufii 



ton 



i 



Id 



while yet the 



means of relieving the unhappy fick had been fought from particu 



lar obfervations ; and they themf elves 



in public pit 



> 



view of every paffenger, who, from his own experience, mi^ 

 ome doubtful means of relief *Their pra&itioners or phyf 



&* 



to the 



npart 



then 



were only fuch as had gathered the inaccurate obfervations of the vul 



id followed the praElice of their fathers or relations 



gar, or 



the fame profejfn 



Ihey 



9 



no 



j 



were 



uainted with the Simph 



then in ufe, their known virtues, and common appellations, which they had 

 faithfully recorded ; and this was all that could be done for the improve- 

 ment of Natural Hijlory in thofe early ages. But when the knowledge 

 of phyfc became more general, and th$ profejfors of that fcience began to 



vy 



w 



ith 



ach other ; a ?nore accurate 



n 



owledg. 



of things fucceeded 



and then it was obferved, that the nature of the machine altered info 



deg 



> 



with every age 



> 



> 



and climate ; that the fc 



difeafe 



s 



peared different, in different conftitutions -, and that different affeEius 



frequently put on the fame appearance for a time. Hence it be 



dent, that the pr office of phyfc required men of the greatejl thought, and 



ofl natural obfervation \ who, befides theje,0mdd be thoroughly acquaint 



ed with the different affe&ions, parts , flru&ure, and 7?iechanif?, 

 the human body ; as well as the different materials, which the knowledge 



of nature, or peculiar obfervations, 





Ight have ,„„ tt 



ht to 



dofes, 



altering the different unnatural difpojitions of the habit 



effeElual 



oeir 



and manner of a& 





Th 



e 



I 



zflity 



a 



J 



and encourager 



orough acquaintance with thefe things, put the 



j upon a more accurate jlydy of the dif- 

 ferent 



of phyfi 



ic 



* 



