A METHOD OF MAKING TERRAS, AND THAT SUCH TERRAS WAS USED IN ALL BRICK AND STONE WORK FOR BUILDING BRIDGES AND WHARFS, AND IN ALL OTHER CASES WHERE IT WAS NECESSARY TO BUILD IN OR FENCE AGAINST THE WATER, AND WITH- OUT WHICH SUCH BUILDING COULD NOT BE PROPERLY BUILT, AND T HE APPD W BE OF GREAT SERVICE TO THE PUBLICK IN GENERALL, BY EMPLOYING DIVERSE POOR PER- BONS, AND ALSO IN FURNISHING HIS SAID MAJESTY'S KINGDOMS AND DOMINIONS THEREWITH AT A MUCH CHEAPER BATE THAN HERETOFORE
Year: 1750

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, ISAAC
DENT, of Crutched Friars, London, Mason, sendeth greeting."
WHEREAS by Letters Patent under the Great Seal of Great Britain,
bearing date the Thirteenth day of March last past, reciteing that the said
Isaac Dent had, by his Petition, humbly represented to His present Majesty
King George the Second, that he had, after having spent much time for
severall years last past, and at a considerable expence, found out and invented
"A METHOD OF MAKING TERRAS, AND THAT SUCH TERRAS WAS USED IN ALL BRICK
AND STONE WORK FOR BUILDING BRIDGES AND WHARFS, AND IN ALL OTHER CASES
WHERE IT WAS NECESSARY TO BUILD IN OR FENCE AGAINST THE WATER, AND WITH-
OUT WHICH SUCH BUILDING COULD NOT BE PROPERLY BUILT, AND THAT ALL TERRAS
USED IN ENGLAND AND HIS SAID MAJESTY'S BRITISH SETTLEMENTS WERE BROUGHT
FROM SOME FOREIGNE PARTS BEYOND THE SEAS, AT A CONSIDERABLE EXPENCE, AND
THAT THE MAKING THEREOF HAD NOT. BEEN DISCOVERED HERE SAVE BY HIM, THE SAID
ISAAC DENT, AND TO HAVE THE SAKE MADE HERE HE APPRENHENDED WOULD BE OF
GREAT SERVICE TO THE PUBLICK IN GENERALL, BY EMPLOYING DIVERSE POOR PER-
BONS, AND ALSO IN FURNISHING HIS SAID MAJESTY'S KINGDOMS AND DOMINIONS
THEREWITH AT A MUCH CHEAPER BATE THAN HERETOFORE;" to prevent the loss of
so usefull a discovery His said present Majesty did give and grant unto the
said Isaac Dent, his executors, adñiors, and assigns, His especial lycence, full
power, sole priviledge and authority, by himself and themselves, or by his or
their deputy or deputys, servants or agents, or such others as the said Isaac
Dent, his executors, administrators, or assigns, should at any time agree with,
and no other, from time to time and at all times thereafter during the term of
years therein expressed, to make, use, exercise, & vend his said Invention
within that part of the Kingdom of Great Britain called England, the Do-

page_text: minion of Wales, and the Town of Berwick-upon-Tweed, in such manner
as to him, the said Isaac Dent, his executors, administrators, and assigns, or
any of them, in their discretions should seem meet, to have hold, exercise, and
enjoy the said lycence, powers, priviledges, and advantages in the said recited
Letters Patent to him, the said Isaac Dent, his executors, administrators, and
assigns, for the term of fourteen years from the date of the said recited Letters
Patent; in which said Patent is contained a provisoe, that if the said Isaac
Dent should not particularly describo and ascertain the nature of his said
Invention, and in what manner the same is to be performed, by an instrument
in writing under his hand and scal, and cause the same to be inrolled in His
Majesty's High Court of Chancery within four kalendar months next and
immediately after the date of the said Letters Patent, that then the said
Letters Patent, and all libertys and advantages thereby granted, should utterly
ceasc, determine, and become void, as by the said Letters Patent, relation being
thereunto had, may more fully and at large appear.
NOW KNOW YE, that he, the said Isaac Dent, in pursuance of and in
obedience to the said provisoe in the said Letters Patent contained, doth
hereby particularly describe and ascertain the nature of his said Invention,
and the manner in which the same is to be performed, as follows (that is to
say)
=
Take freestone and burn it in a kiln or furnace till it becomes like a body
of fire, then take it out and cool it, and then grind it in a mill till it becomes a
fine powder, and then skreen or sift it through a fine skreen or sieve to seperate
the fine stuff from the hard lumps, which the mill cannot easily break, and
then the same becomes terras; or (where such freestone is scarce or becomes
too dear to answer the end, and cannot be had at a moderate expence), mix fine
light loam or clay with water, and work it up into a substance, and lay it out
to dry and harden in the sun and wind till it becomes hard almost like a stone,
then burn it in a kiln or furnace, and grind, skreen, or sift it in the very like
manner as above directed when it is made with freestone.
In witness whereof, the Isaac Dent hath hereunto sett his hand and scal,
the Tenth day of July, in the twenty-fourth year of the reign of our
Sovereigne Lord George the Second, by the grace of God, of Great
Britain, France, & Ireland King, Defender of the Faith, &c., and in
the year of our Lord One thousand seven hundred and fifty.
ISAAC DENT. (L.B.)
Sealed and delivered (being first duely
stampt) in the presence of
HENRY METCALFE.
JN° DRAKE.

page_text: AND BE IT REMEMBRED, that on the Tenth day of July aforesaid,
in the year above written, the aforesaid Isaac Dent came before the said
Lord the King in His Chancery at Westminster, and acknowledged the above
Instrument, and all and every thing therein contained and specified, in form
above written. And also the Instrument a resaid was stampt according to
the tenor of the Statute made in the sixth year of the reign of the late
King and Queen William and Mary of England, and so forth.
Inrolled the Tenth day of July aforesaid, in the year above written.