238 



Ultra microscope, 3 1 

 microorganisms, 31 



Vaccination, history of, 11, 12 

 Vaccine, rabies, 140 



small-pox, 138 

 Vaccines, 125 

 Vaccinia, 12 

 Van Helmont, 8 

 Varro, 12 



-Vegetable cooker, 40 

 Vibrio, 69 



Vincent's angina, 157 

 Vinegar, 113 

 Virus, Danysz's, iii 



rat. III 

 Von Dusch, 11 



Waldeyer, 13 

 Walker, 160 

 Warrington, R., 4 

 Washes, 187 

 Wassermann test, 218 

 Water, copper treatment, 179 



filtration, 181 



mineral, 64 



INDEX. 



Water, purification of, 179 



supplies, 179 

 Webster, Noah, 7, 20 

 Weichselbaum, 15 

 Widal test, 122 

 Wine, 9 



rice, I4S 

 Wire baskets, 37 

 Wool bleaching, 9 

 Wound disinfection, 12 

 Wright, IS 



X-rays, 163 



Yeast cakes, 148, 154 



cells, 65 

 Yeasts, 142 

 Yellow fever, 215 

 Yersin's serum, 135 

 Yoghurt, 108 



tablets, no 



Zooglea formation, 29 

 Zymoid, phlogistic, 14 

 Zymophore, 121 



