C ) . 
This Work is fo well contrived and executed, that Vis thoiigbt 
there never was feen in the world a Body of Mafonry more folid 
than this ; the charges of which are yet not confiderabie in pro- 
portion, btcaufe the Stones, Lime, Sand and Water are to be liad 
upon the place. 
As to the Grand Bafon^to which the Waters of the Store-houfe^ 
are by the Channel of Sr. Feriel to be conveyed ; the figure a*nd 
compafs of it having been a'ready defcribed in the Trmjkfiiom. 
above-mention 'd ; we fold only thefe particulars to be added 
thereto, T/^^^ it is to be two fathoms deep all over ; that it 
receives the waters of the fa!:d Channel at one of its Corners ^ 
anddiftributes them by two others, through two Channels, into 
the Ocean and Mediterranean ; that there are moreover to be 
two other Channels ; one to difcharge the Fafon when there is 
too much water ; the other is not to come out of the Eafon, but 
the Deriving Channel , to make the dirty waters, that it may 
bringdown, to run out, that fo the Pond receiving no other 
but clear and clean waters, may not be filled up with mud. 
This Eafon is in a manner quite done. For its ornament, it is 
to have not only an elegan': key, but a regular Town built round 
about it after the model of the Flace Boyd of Farts; a^l the 
houfes alike and equal, with great Arches beneath , to go under 
cover to the Key. There is a fo to be an Arfenal , for Boats to 
lye under, and for containing all neceflaries to build and furnifh , 
them. 
If any onefiiallask, how far this Work is advanced, this 
Author affurerh, that there is fo niuch of it done, that before 
the end of this year it will be Navigable from the Eafon. to the 
Garonne. And if it fliould be doubted , whether .the above- 
defcribed'Store-houfe will be fufBcient to fnrnifh wa^er at all 
times; the fame tells you, that the peaces are fqdifpofed, that 
below^ that great Magazin one may make tv/o or three more , and 
with little cdft convey in Winter the fuperfluous waters of the 
fame Rivers, that coir.e out of the Black Mountain, . into theni, . 
for a further fupply. . 
This Royal Channelis every where five fathoms large at the 
bottcm, and for the moft part nine fathoms and two feet broad, 
above. It isordinarily between fixand nine. foot deep,, and 
fometlmes 
