1846.] 
THE NATIONAL INSTITUTE. 
505 
you, the copies for the Academy of Sciences, of Berlin, having been forwarded by 
his Excellency tile Prussian ambassador, and those for the Imperial Mining Estab. 
lishment, of Vienna, through his Excellency the Austrian ambassador. 
I have the honor to be, sir, your Excellency’s very obedient, servant, 
H. T. DE LA BECHE. 
His Excellency Louis McLane, <J c\, $-c. 
38 Harley 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 Great Bri- 
tain and Ireland as you may be pleased at any time to present to the National 
Institute at Washington. 
I have the honor to bo, sir, your most obedient servant, 
LOUIS McLANE. 
Sir H. T, de la Beche, tj-c, c \c. $-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 the part of her majes- 
ty’s Government, to that establishment, a copy of which 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 the 
manner in which it should be forwarded to Washington. 
I have the honor to be, sir, your Excellency’s most obedient servant, 
H. T. DE LA BECHE. 
His Excellency Louis McLane, tf-r., tfc., <J-c. 
From Sir H. T. de la Beche . 
Geological Survey of Great Britain and Ireland, 
London, June 4, 1846. 
Sir: lam directed by the Chief Commissioner of Woods, Works, and Land 
Revenues to present to the National Institute, of Washington, on 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, sections, and memoirs 
of the geological survey of Great Britain and Ireland will be forwarded to the Na- 
tional Institute, of Washington, for its acceptance, as they become ready for publi- 
cation . 
I have the honor to be, sir, your very obedient servant, 
H. T. DE LA BECHE, Director General. 
hist 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 sections. 
1 index sheet of colors. 
TRENHAM REEKS, Secretary . 
