13G 
Mr. P. Cameron drew attention to the importance of the 
examination of the male organs of Bees and Wasps, as in 
many cases they furnish great aid to their classification. He 
exhibited a series of drawings of these objects executed by 
Mr. Chaffers, and under the microscopes a large number of 
specimens. 
There were also shown by means of the microscopes, 
by the President, some very interesting Macrospores of 
Lycopods, from the Scotch coal-beds ; 
And by Dr. Hodgktnson some sections of silicified wood^ 
Ordinary Meeting, March 14, 1887. 
Mark Stirrup, F.G.S., in the Chair. 
Mr. Stirrup exhibited slides of Sporangites Huronensis 
(Dawson), from the Devonian shales of Ohio. 
Mr. H. C. Chadwick exhibited a series of twenty-five 
original drawings illustrating the minute anatomy of Ante- 
don Tosaceus. In a few explanatory remarks he briefly 
described the fibrillar envelope which encloses the cham- 
bered organ, and from which cord-like processes extend 
through all the arms and cirrhi. Keference was made to 
the experiments of Dr. Carpenter and Prof. Milnes Marshall, 
which point to the conclusion that these structures consti- 
tute a nervous system. Mounted preparations of various 
parts of Antedon rosaceus were exhibited under the micro- 
scopes. 
