9 
Ordinary Meeting, November 4th, 1862. 
J. P. Joule, LL.D., F.R.S., Vice-President, in the Chair. 
Mr. Peter Hart was elected an Ordinary Member of the 
Society. 
Dr. Roberts exhibited some microscopic preparations 
illustrating the effect of a solution of magenta on the blood. 
The red blood-disks were tinted of a faint rose ; and one 
portion of their outline, in a majority of the corpuscles, 
appeared more deeply tinted than the remainder. The pale 
corpuscles were more strongly tinted than the red ; and their 
nuclei were displayed with great clearness, dyed of a magnifi- 
cent carbuncle-red. A number of the nuclei were seen in 
the process of division, more or less advanced, and in some 
cells the partition had issued in the production of two, three, 
or four distinct secondary nuclei. There was evidence that 
these secondary nuclei were set free in the blood, and, by 
subsequent enlargement and change of form and chemical 
constitution, developed into red blood disks, which would 
therefore appear to be, as Mr. Wharton Jones first conceived, 
free cellaeform nuclei, and not, according to the current 
belief, enlarged and altered pale corpuscles. 
Mr. Dyer, Vice-President, exhibited a broken screw bolt, 
l|in. square (used to fasten a cart body to the axle). The 
fracture, near the head end, appeared very much like one of 
Proceedings— Lit. and Phil, Society— No, 2 .— Session 1862 - 3 . 
