1846.] THE NATIONAL INSTITUTE. 505 



you, the copies for the Academy of Sciences, of Berlin, having^ been forwarded by 

 his Excellency the Piussian ambassador, and those for the Imperial Mining Estab. 

 lishment, of Vienna, thiough his Exoolleacy the Austrian ambacsador. 



I have the honor to be, sir, your Excellency's very obedient sprvant, 



H. T. DE LA BECHE. 



His Excellency Loiris McLane, ^c, ^e. 



38 Harlet street, May 25, 1846, 



Sir: I beg leave to state, in reply to your letter of the 23d instant, that it will 

 afford me great pleasure to take charge of and transmit to their appropriate desti- 

 nation such maps and sections and memoirs of the geological survey of Groat Bri- 

 tain and Ireland as you may be pleased al any time to present to the National 

 Institute at Washington. 



I have the honor to be, sir, your most obedient servant, 



LOUIS McLANE. 

 Sir H. T, DE LA Becue, ^c, ^c. «J-c. 



Geological Survey Office, June 4, 1846, 

 Sir: I have the honor herewith to transmit the official communication to the 

 President of the National Institute, of Washington, respecting the maps and sec- 

 tions of the geological survey of Great Britain, presented, on llie part oi her majes- 

 ty's Government, to that establishment, a copy of whicli I also forward to your 

 Excellency. 



As the case containing the maps and sections is somewhat large, I have not 

 forwarded it to your Excellency's residence, but await your wishes respecting tha 

 manner in which it should be forwarded to Wasliington. 



I have the honor to be, sir, your Excellency's most obedient servant, 



H. T. DE LA BECHE. 

 HiB Excellency Louis McLane, ^r., ^-c, ^c. 



From Sir H. T. de la Beche. 



Geological Survey of Great Britain and Ireland, 



London, Jane 4, 1846. 



Sir: I am directed by the Chief Commissioner of Woods, Works, and Land 

 Revenues to present to the National Institute, of Washington, ou the part of her 

 Britannic Majesty's Government, the maps and sections of the geological survey of 

 Great Britain enumerated in the accompanying list. 



And I am further instructed to state that all the maps, snctions, and memoirs 

 of the geological survey of Great Britain and Ireland will be Ibrwarded to the Na- 

 tional Institute, of Washington, for its acceptance, as ihey become ready for publi- 

 cation. 



I havo the honor to be, sir, your very obedient servant, 



11. T, DE LA BECHE, Director General, 



List of Maps and Sections of the Geological Survey of Great Britain, 

 herewith transmitted to the National Institute, of Washington. 



25 sheets of maps, 

 17 horizontal sections. 

 15 vertical sectiens, 

 1 index sheet of coiora. 



. TRENHAM REEKS, Secretary. 



