Address of Professor Hualey. 397 
ee euneiaainieia 
oe ee 
ate 
as the vaccine matter, by its irritative property, produced a wn & 
h : 
ilar experiments have proved that two of the most destructive 
Vv ection,” or “conta- 
gion,” to fresh wort. In both cases it is the solid living parti- 
cles which are efficient; the liquid in which they float, and at 
the expense of which they li being altogether passive. 
Now arises the question, are these microzymes the results of 
s, or of Xenogenesis ; are they capable, like the To- 8 
