1865.] Proceedings of the Asiatic Society. 89 



In my fourth paper, I showed what effect these deflections in 

 the plumb-line would have in the first of the two problems which 

 Surveys have to solve — viz. mapping a country, and the result was, 

 that the relative position of places in a country could be determined 

 by the Survey with accuracy, but the precise position of the map on 

 the globe could not be found : this would depend upon the unknown 

 deflection of the plumb-line at the particular station from which the 

 Survey operations began. This is the result you said last night you 

 announced when you were before President. 



In my fifth paper, (on which my letter which is about to be published 

 was written,) I show what the effect of the deflection is upon the 

 second of the two problems, viz. the accurate determination of the 

 average form of the earth. This paper consists of three parts. (1) I 

 show that the amount of uncertainty introduced into the problem of the 

 figure by local attraction is very considerable. (2) By making a very 

 probable hypothesis, I show that this uncertainty may be altogether 

 removed. (3) I gather some speculative results regarding the consti- 

 tution of the earth's crust. 



Thus you see that while the result announced on the former occasion 

 was final in the one problem, the result now announced is final in 

 the other" 



A letter from Dr. B. Simpson, intimating his desire to withdraw 

 from the Society, was recorded. 



The following gentlemen, duly proposed at the last meeting, were 

 balloted for and elected ordinary members. 



C. W. Villiers Bradford, Esq. 



Lieutenant J. Waterhouse. 



C. Davies, Esq. 



The Rev. C. H. A. Dall was also balloted for and elected an Associate 

 member. 



The following gentlemen were named for ballot as ordinary members 

 at the next meeting. 



Raja Joykissen Doss Bahadur, Deputy Collector and Magistrate, 

 Allyghur, proposed by Syad Ahmad Khan Bahadur, seconded by the 

 President. 



Joseph Agabeg, Esq., proposed by Capt. W. N. Lees, seconded by 

 the President, 



