42 Dr. A. Ransome on Forced Breathing. [Dec. 18, 



III. " On the Male, and the Structure, of Thaumops pellucida." 

 By R. VON WILLEMOES-SUHM, Ph.D., H.M.S. < Challenger/ 

 Communicated by Prof. HUXLEY, Sec. R.S. Received October 



24, 1873. 



(Abstract.) 



This is an addition to the paper on Thaumops pellucida by the same 

 author (Proceedings of the Royal Society, vol. xxi. p. 206), containing an 

 account of the male, and some corrections of the description formerly 

 given. The species appears to be widely distributed, and to live at mode- 

 rate depths, coming to the surface at night. 



IV. "On the Bending of the Ribs in Forced Breathing." By 

 ARTHUR RANSOME, M.D. Communicated by Dr. BURDON 

 SANDERSON, M.D., F.R.S. Received May 15, 1873. 



(Abstract.) 



In a paper "On the Mechanical Conditions of the Respiratory Move- 

 ments," read before the Royal Society in November 1872*, the author 

 endeavoured to show that there is a distinct difference in the chord 

 lengths of a sternal rib in the two positions of full inspiration and 

 forced expiration, and that a certain degree of bending of the riba 

 usually takes place in forced breathing. The measurements on which 

 these conclusions were based were made with a 3-plane stethometer, 

 the performance of which was not sufficiently accurate to satisfy the 

 author, who has accordingly repeated them by the aid of a new instru- 

 ment, the construction and use of which are described at length in the 

 present communication. The author considers that the new instrument 

 gives fairly accurate results, which fully corroborate the conclusions pre- 

 viosly enunciated. 



December 18, 1873. 

 JOSEPH DALTON HOOKER, C.B., President, in.the Chair. 



Pursuant to notice given at the last Meeting, the President proposed, 

 and Professor Henry John Stephen Smith seconded, the Right Hon. 

 Edward Cardwell, M.P., Secretary of State for War, for election and 

 immediate ballot. 



The ballot having been taken, Mr. Cardwell was declared duly elected. 



The Presents received were laid on the Table, and thanks ordered for 

 them. 



* Proceedings of the Eoyal Society, November 22, 1872. 



