154 Proceedings at the Meetings. 
2. On some new and rare Jurassic plants from Yorkshire—The 
male flower of Williamsonia gigas (Lind. & Hutt). By H. Hamsnaw 
Tuomas, M.A., Downing College. 
3. Nomenclature of Pteris aquilina. By Dr C. E. Moss. 
May 10th, 1915. 
In the University Chemical Laboratory. 
ProFEssoR NEWALL, PRESIDENT, IN THE CHAIR. 
The following Communications were made : 
1. (1) The Ketodilactone of Benzophenone-2-4-2'-4’-tetracarb- 
oxylic Acid. 
(2) The Synthesis of 1-5-Dibromo-3-isopropylpentane. 
By W. H. Mitts, M.A., Jesus College. 
2. Further experimental researches on Insect Flagellates intro- : 
duced into Vertebrates. By Dr H. B. FanrHam and Miss Annip 
PORTER. : 
3. Note on Dr Searle’s experiment on the harmonic motion of a _ 
rigid body. By Sir G. Greenwizt. 
4. On the Electrification given to the Air by a Steam J et. By © 
W. A. D. Rupes, M.A., St John’s College. 
