civ 



of the earth, as of all globes, is probably solid, though it is now- 

 believed that there is a molten space between the nucleus and the 

 crust. Another idea of importance is that the rocks down through 

 the oldest stratifications to the Lawrentian, or the whole of the 

 cooled crust of the earth, is not necessarily formed by the cooling 

 and solidification of the crust, but by later condensations and 

 deposits from the atmosphere and ocean. 



Complete sets of the Transactions (as far as they could be fur- 

 nished) were ordered sent to the Buffalo Society of Natural His- 

 tory and the Royal Geographical Society of London. 



January 4, 1875. 



W. T. Harris, President, in the chair. 



Eighteen members present. 



Among the communications read was one from the San Diego 

 (Cal.) Society of Natural History, a newly organized society, 

 requesting to be placed on our exchange list. On motion, the 

 Society was placed upon the exchange list, and the Transactions 

 from vol. iii. No. i ordered sent. 



The Conesponding Secretary then submitted his annual report, 

 as follows : 



REPORT OF THE CORRESp6ndING SECRETARV FOR 1S74. 

 To the President of the Academy of Science. 



As Corresponding Secretary, I submit my report of operations for the 

 year 1874. The correspondence and exchanges of the Academy have been 

 continued as heretofore, and with rather increased activity. The effect of 

 sending forward another number of our Transactions, in 1873, has been 

 quite perceptible in the increase of returns received by way of exchange. 

 Another number will doubtless be distributed in the coming spring. Some 

 few of the Societies, which ceased to send us their publications during the 

 intermission of our Transactions, have not yet renewed their sending; but 

 most of them have done so. The greater number of the Foreign, and 

 nearly all of the Home, Societies have continued to send us their publica- 

 tions uninterruptedly. Four Foreign Societies and three Home have been 

 added to our list during the year 1874. 



The number of Foreign Societies and authors to whom we are now send- 

 ing our Transactions in exchange is 201 : and returns are received from the 

 greater part of them. 



