SPONTANEOUS GENERATION 13 



Pasteur added little that was new, his experiments were of 

 such a nature that they left little doubt in the minds of those 

 who became acquainted with them that spontaneous genera- 

 tion had no foundation in fact, and, since his time, it has 

 generally been believed that however life formerly origi- 

 nated it does not now originate spontaneously, and that the 

 law of Harvey omne vivum ex ovo, or its modification omne 

 vivum ex vivo applies to the lower as well as to the higher forms 

 of life. 



