452 Proceedings. 



found depths. The force thus stored may be liberated under certain circum- 

 stances by insignificant vibrations, and thus become an important factor in 

 the generation of violent earthquake shocks. It at least points to a method, 

 hitherto unsuspected, by which intense force may be stored up as a conse- 

 quence of earth movements, without calling in the aid of the plutonic fusion 

 of rock masses. 



On the walls were exhibited specimens of the daily weather charts for 

 the whole Australasian Group, which are now issued by the Government of 

 Queensland under the superintendence of Mr. Clement Wragge, the Govern- 

 ment Meteorologist. 



Ninth Meeting : 30th November, 1887. 



Dr. Hutchinson, President, in the chair. 



Papers. — 1. "On a new Species of Large Decapod. (Archi- 

 teuthis lowj h nanus, y by T. W. Kirk. [Transactions, p. 34.) 



Tenth Meeting: 11th January, 1888. 

 Dr. Hutchinson, President, in the chair. 



Xew Member.— Mr. A. H. Turnbull. 



Papers. — 1. " Probable Discovery of the Physical Causation 

 of Gravitation," by T. Wakelin, B.A. 



Absteact. 



The following is a summary of the conclusions arrived at in the 

 paper : — 



(1.) That physical-science philosophers believe that gravitation must 

 be caused by the action of some physical agent. 



(2.) That no material agent can act directly on every particle of a very 

 large body. 



(3.) That probably some physical agent acts on the outside of the Sun, 

 and of Jupiter, producing the motion of certain spots. 



(4.) That the physical agent would act more strongly on the side of the 

 earth furthest from the Sun, to deflect the earth in its course, than it does 

 on the nearer side 



(5.) That this force acts more strongly at or near the centre of the 

 earth's shadow ; the part of the earth under a vertical sun having the force 

 df gravity weaker than the average. 



((>.) That the clocks at the surface of the earth at the places indicated 

 should be affected accordingly. 



(7.) That this variation in the force of gravity is about coincident with 

 the average day and night and seasonal temperature, taking the variation in 

 the force of gravity due to latitude into account. 



(H.) That, the temperature of the clocks generally is the same as the 

 day and night and seasonal temperature. 



('.).) That mercurial or other compensation is such as to make the clock 

 go faster in summer and slower in winter than the proper rate. 



(10) That when regulating a clock for variations of temperature, the 

 compensation may really compensate for day and night and seasonal varia- 

 tions in the force of gravity, coincident with the changes in position of the 



