PHYSIOLOGICAL REFLECTIONS 



ON THE 



NATURAL HISTORY 



ANIMALS AND VEGETABLES. 



I. Animalcula of Infusions. — ^Even mthi& 

 advanced ftage of fcience, we are intimately ac- 

 quainted with the natural hiftory of only a few 

 of the larger animals which are daily in view. 

 The particular age when they begin to generate 

 is known ; we can calculate the period of gefta- 

 lion ; we have learned what food is unfuitable to 

 their nature j and fometimes it may be difcovered 

 whether they are healthy or difeafed. Thefe ge- 

 neral fafts have been attained by reiterated and 

 evident obfervation, — Yet of the fecret vital phe- 

 nomena. 



