WYMAN, ON THE FORMATION OF INFUSORIA. 119 
it may be urged with equal force, on the other hand, that all 
ova and spores, in so far as we know anything about them, 
are destroyed by prolonged boiling; therefore, “from analogy 
we are equally bound to infer that Vibrios, Bacteriums, &c., 
could not have been derived from ova, since these would all 
have been destroyed by the conditions to which they have 
been subjected. The argument from analogy is as strong in 
the one case as in the other. 
CamprineéE, U.S.; May 9th, 1862. 
