THE ART OB MISTERY OF DYING GREEN AND BLUE SAXON COLOURS, WHICH HAD NEVER BEER PERFORMED BY ANY PERSON OR PERSONS WITHIN HIS MAJESTY'S DOMINIONS SAVE BY THE SAID FORRKIONER AND US, THE SAID PATENTEES, IN MAKING THE NECESSARY EXPERIMENTS, BUT THAT ALL KINDS OF WOOLEN GOODS, WORSTED, AND SILK THAT HAD BEEN DYED OF THOSE COLOURS HAD BEEN ALWAYS SENT ABROAD FOR THAT PUR- POSE, TO THE GREAT DETRIMENT AND PREJUDICE OF HIS SAID MAJESTY'S SUBJECTS
Year: 1748

page_text: SPENCE, DOLBY, & WEGUELIN'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, wee, GEORGE
SPENCE, of the Parish of St. Olave, Southwark, Dyer, CHARLES DOLBY, of
Lothbury, London, Warehouseman, and JOHN CHRISTOPHER WEGUELIN, of
Throgmorton Street, London, Merchant, send greeting.
WHEREAS His most Excellent Majesty King George the Second, by His
Letters Patent under the Great Seal of Great Britain, bearing date at West-
minster, the Eighth day of August, in the twenty-second year of His reign,
reciting that whereas wee, the said George Spence, Charles Dolby, and John
Christopher Weguelin, had, at a great expence and charge, by the means and
assistance of a Forreigner (who had sold all his interest in the art or mistery
therein menconed, and herein-after particularly described to us, and was gone
to reside abroad again), discovered and brought to perfection "THE ART OB
MISTERY OF DYING GREEN AND BLUE SAXON COLOURS, WHICH HAD NEVER BEER
PERFORMED BY ANY PERSON OR PERSONS WITHIN HIS MAJESTY'S DOMINIONS SAVE
BY THE SAID FORRKIONER AND US, THE SAID PATENTEES, IN MAKING THE NECESSARY
EXPERIMENTS, BUT THAT ALL KINDS OF WOOLEN GOODS, WORSTED, AND SILK THAT
HAD BEEN DYED OF THOSE COLOURS HAD BEEN ALWAYS SENT ABROAD FOR THAT PUR-
POSE, TO THE GREAT DETRIMENT AND PREJUDICE OF HIS SAID MAJESTY'S SUBJECTS)"
did give & grant unto us, the said George Spence, Charles Dolby, and John
Christopher Weguelin, our executors, admors, and assigns, His especial
licence, full power, sole priviledge and authority, that wee, the said George
Spence, Charles Dolby, and John Christopher Weguelin, our executors,
admors, and assigns, and every of us, from time to time and at all times there-
after during the term of fourteen years from the day of the date of the said
Letters Patents, should and might make, use, exercise, and vend our said
new Invention within England, Wales, and Town of Berwick-upon-Tweed,

page_text: in such manner as to us, our executors, administrators, & assigns should seem
meet; in which said recited Letters Patent there is a proviso obliging us, the
aforesaid George Spence, Charles Dolby, & John Christopher Weguelin, by an
instrument in writing under our hands & seals, or the hand & seal of any
one of us, particularly to describe & ascertain the nature of our said Inven-
tion, & in what manner the same is to be performed, & to cause the same to
be inrolled in His said Majesty's High Court of Chancery within four calender
months next & imediately after the date of the said recited Letters Patent,
as in & by the same (reference being thereunto had) may more fully and at
large appear.
NOW KNOW YEE, that in compliance with the said proviso, wee, the said
George Spence, Charles Dolby, & John Christopher Weguelin, do hereby
declare, that the said Invention is to be performed in manner following
(viz¹):-
That in order to dye green or blew Saxon colours, wee first of all compose
a tincture of the following materialls:-Take one pound of oyl of vitriol and
put it into an earthen vessel, then add to it two ounces of indigo properly
pulverized, and one ounce of arsenicum rubrum, or red arsenick, pulverized
in like manner, together with four ounces of cobalt, or four ounces of bole
armoniack. These are the materials of which the blew saddening is to be
composed, all the aforesaid ingredients being well stirred together. Then, to
prepare for the boiling the said colours in a kettle or copper, we put allum
and argol with liquor, as if for a common boiling. For green Saxon colour,
wee boil old or young fustick, with which we make a flatt, then use the blew
saddening sufficient to make the colour to your mind. For the Saxon blew,
we use the saddening before menconed with clear water, being first boiled off
after the manner before mentioned.
In witness whereof, wee the said George Spence, Charles Dolby, &
John Christopher Weguelin, hath hereunto sett our hands & seals,
this First day of December, in the twenty-second year of the reign
of His said Majesty King George the Second, and in the year of our
Lord One thousand seven hundred forty and eight.

page_text: AND BE IT REMEMBRED, that on the said First day of December,
the said George Spence, Charles Dolby, & John Christopher Weguelin,
came before our Lord the King in His Chancery, and acknowledged the
Writing aforesaid, and every thing therein contained & specifyed, in form
above said. And also the said Writing was stampt according to the Act of
Parliament made in the sixth year of the reign of the late King William
and Queen Mary, and so forth.