156 SUBJECT INDEX 



Vacuoles, 20 Visual purple, 19 



Vesicant substances, 95 Vitamin Bi, 76, 83 



Vesicants, 90, 91 Vitamin Bj, 76 



Vesication, 70, 120 

 Viruses, 23, 134, i37 Xanthopterin, 138 



