EXPERIMENTS. 203 



fels of the human body already formed In the 

 femen, he does not even alcribe to them their 

 real function, which is the prodndlion of the 

 moving bodies. He obferves *, * Quid fiet de 



* omnibus illis particulis feu corpufculis praeter 

 ' ilia animalcula femini virili hominum inhae- 

 ' rentibus ! Olim et priufquam haec fcrlberem, 



* in ea fententia fui praedidas ftrias vel vafa ex 



* telliculis principium fecum ducere,' &c. And, 

 in another place, he fays, fhat what he had for- 

 merly remarked concerning veffels in the femen 

 deferved no attention. 



'Thirdly^ If we compare the figures i. 2. 3. and 

 4.. Pl.VUI. IX. which we have reprefented exact- 

 ly as they appear in the Philofophical Tranfac- 

 tions, with thofe which Leeuwenhoek caufed to 

 beengravedfeveral years after, wefnall find very 

 great differences, efpecially in thofe of the dead 

 animalcules of the rabbit, i. 3. and 4. and in 

 thofe of the dog, which I have alfo delineated, 

 in order to give a diftind: idea of tlie matter. 

 From all this, it may fairly be concluded, that 

 Leeuwenhoek has not always feen the fame 

 phaenomena ; that the moving bodies, which he 

 regards as animals, have appeared to him under 

 different forms ; and that he has contradicted 

 himfclf with a view to make the fpecies of men 

 and of animals uniform and confident. He not 

 only varies as to the fundamental part of thefe 

 experiments, but alfo as" to the manner of ma- 

 king 



• Tom. I. p- 7. 



