& . any, in times 
past, have projected such a connection of Britain with the continent; but 
their projects were without a basis of observation. This is not so with 
the plan now under consideration, which has already excited much inter- 
est in the public at arge. The author is a French engineer, Thomas de 
amond. He has not put forward his scheme except after a persevering 
study, as complete as the case admits of, of the region across which the 
tunnel is projected, and an examination into the causes which have 
concurred to the formation and preservation of the Calais straits. 
_ Mr. Gamond has been occupied with the subject directly or indirectly 
Since 1833, He has studied out three methods and six lines; and his 
Tesults are presented with full details in the memoir which he has pub- 
lished entitled “Etude pour l’avant-projét d’un tunnel sous-marin entre 
PAngleterre et la France.” He has also published his geological and hy- 
drographical researches made in this connection, and also the observations 
ade by the official commission consisting of the General Council of 
Mines, over which Elie de Beaumont presides, and the General Couneil o: 
the Department of Roads and Bridges. He considers the various objec- 
tions; and to the general remark that it is impracticable, he says that 
there is no part of it which has not its equivalent actually accomplished 
in some of the works completed during the past 30 years.* The follow- 
ing extracts from the memoir of Mr. Gamond, will enable the reader to 
Judge ppestiog it. Sti 
(1.) The Region to be traversed —On the French side, in the vicinity of 
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the strata beneath the straits. Thus about two-fifths of the Calais 
Straits are formed of oolitic limestones, compact sandstone of the Port- 
land epoch and the greensand of the Cretaceous, The rest of the mate- 
Tial consists of clay strata of three ages—the Oxford clay, the Kimme- 
ndge clay 150 meters thick, and the Weald clay. The presence 
beds is considered very favorable. : 
Line of the tunnel,—The line leaves the Continent under Cape Gri- 
ject i f those that require the codperation of two govern- 
ments, it has Ds alten wboaltted to ibe Bagheh nation. Lord Palmerston ap- 
orably dis if we may judge from the good word which he spoke on 
occasion. «the ; ject will succeed, for it is well regarded, and has in its 
_ favor all the ladies of England.” 
* 
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