1 906-1907.] Co-operation amongst Local Scientific Societies. 41 1 



5th. Mr Vaughan has actually seen the wings flap, and says 

 that at the moment when the fish rises the flapping is clearly 

 discernible by the naked eye. 



Taken together, these five arguments seem to me most 

 convincing. 



There is one point which strikes me as very curious 



namely, the sudden increase of speed noticed directly the fish 

 descends to the surface and dips its tail in the water. This 

 increased speed coincides with the moment at which the 

 movement of the wings again becomes visible. It occurs to 

 me, therefore, that the fish perhaps flaps its wings only at 

 the commencement of each short flight — that is, for the two 

 seconds or so during which the movement is visible ; and that 

 after enough initial velocity is gained the wings are held 

 motionless, and serve as a parachute till the fish again de- 

 scends to the water, when flapping again begins. This sup- 

 position would account for the otherwise unexplained increase 

 in speed each time the fish touches the water. 



At this meeting Mr Tom Speedy read a very interesting 

 paper entitled " Jottings on Jura," which was much enjoyed 

 by the members present. 



XI.— SUGGESTIONS FOR CO-OPERATION AMONGST 

 LOCAL SCIENTIFIC SOCIETIES 



Eepokt of the Delegate to the Beitish Association. 



By Mr W. C. CEAWFOED, F.E.S.E. 

 {Read Nov. 28, 1906.) 



This Society was invited by the British Association to send a 

 delegate to attend the Conference of Delegates of Correspond- 

 ing Societies at York, and your Council appointed me their 

 representative. I attended both the meetings of delegates. 

 Three years ago, at Southport, Sir Norman Lockyer, in his 



