246 



INDEX 



Vinegar, work on, 116-119 

 Virgil, on spontaneous origin 



of bees, 85 

 Vivisection, benefits of and 



opposition to, 221-225 

 Vulpian, Dr., 214 



Weber, Dr., 213 



Wine, diseases of, 1 19-123 

 Wohler, artificial synthesis 

 of urea, 37 



Yeast plants, 49, 50, 68-73, ?6> 



79 

 Yellow fever, 179, 180 

 Yersin, Dr., 238, 240 



