64 
round with several folds of flannel, and place them near 
the hot water pipes in the hothouse, damping the moss 
three or four times a week with warm water. By this plan 
I have been very successful, and have only had one specimen 
this year otherwise than quite perfect. 
Mr. W. Boyd Dawkins, F.R.S., sent for exhibition some 
very interesting microscopic sections of Eozoon Canadense, 
which are the more valuable as being those which have 
passed through the hands of Sir W. E. Logan and Dr. 
Carpenter. 
Mr. J. B. Dancek, F.R.A.S., presented the Section with a 
box containing twelve new polarizing objects. These partly 
consisted of some of the hard fatty acids which form very 
effective objects, and partly of crystalizations of some of the 
hydro-carbon compounds which compete with the best 
specimens of polarizing objects of the present day. 
