Proceedings at the Meetings. 431 
3. A Double-Four Mechanism. By G. T. Benyert, M.A, 
‘Emmanuel College. 
4, On the Presence of certain Lines of Magnesium in Stellar 
‘Spectra. By F. E. Baxanpatt. (Communicated by Professor 
Newall.) 
4 
i 
February 9th, 1914. 
In the Botany School. 
PROFESSOR SEWARD, VICE-PRESIDENT, IN THE CHAIR. 
The following Communications were made: 
_ 1. Exhibition of specimens illustrating the damage caused by 
certain wood-boring beetles. By Hucu Scott, M.A., Trinity College. 
je The History of the occurrence of Azolla in the British Isles 
and in Europe generally. By A. S. Marsu, B.A., Gonville and Caius 
College. (Communicated by Professor Seward.) 
_ 3. Amitosis in the Parenchyma of water plants. By R. C. 
‘McLean. (Communicated by Professor Seward.) 
4. On Root Development in Sératiotes aloides L. with special 
reference to the occurrence of Amitosis in an embryonic tissue. By 
‘Mrs Arper. (Communicated by Dr E. A. Newell Arber.) 
February \7Tth, 1914. 
In the Cavendish Laboratory. 
| ProFessor Sir J. J. THOMSON, IN THE CHAIR. 
The following Communication was made: 
_ Recent work at the Heidelberg Observatory on the Nebulae and 
their Spectra. By Dr Max Wotr. 
