A CERTAIN POWDER CALLED THE POUDRE UNIQUE, OF A PARTICULAR EFFECT TO PURIFY THE HUMAN BLOOD, AND CURE THE RHEUMATISM, SCURVEY, JAUNDICE, AND ALL DISORDERS ARISING FROM A FOULNESS OF BLOOD
Year: 1769

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, CHARLES
LERAT, of Newman Street, in the Parish of Saint Mary-le-Bon, in the
County Middlesex, Surgeon, send greeting.
WHEREAS I, the said Charles Lerat, did, by my Petition, humbly repre-
sent unto His Majesty that I had, after long study, labour, and expe-
rience, invented and found out "A CERTAIN POWDER CALLED THE POUDRE
UNIQUE, OF A PARTICULAR EFFECT TO PURIFY THE HUMAN BLOOD, AND CURE THE
RHEUMATISM, SCURVEY, JAUNDICE, AND ALL DISORDERS ARISING FROM A FOULNESS
OF BLOOD," and that no other person had invented or prepared the said medicine
to my knowledge and belief; I therefore most humbly prayed His Majesty that
he would be graciously pleased to grant unto me, my executors, administrators,
and assigns, His Majesty's Royal Letters Patent for the sole preparing and
vending the said powder within His said Majesty's Kingdom of Great Britain,
His Dominion of Wales, and Town of Berwick-upon-Tweed, and also within
all His said Majesty's Colonies or Plantations abroad, for the space of
fourteen years, according to the Statute in that case made and provided; and
whereas, by Letters Patent under the Great Seal of Great Britain, bearing
date the Twenty-third day of December, in the tenth year of His said Majesty's
reign, after reciting the said Petition, and also reciting that His Majesty, being
willing to give encouragement to all arts and inventions which might be for
the publick good, was graciously pleased to condescend to my request, His

page_text: said Majesty, of His special grace, certain knowledge, and meer motion, did,
for Himself, His heirs and successors, give and grant unto me, the said
Charles Lerat, my executors, administrators, and assigns, His special licence,
full power, sole priviledge, and authority, that I, the said Charles Lerat, my
executors, administrators, and assigns, and every of them, by myself and them-
selves, or by my or their deputy or deputys, servants or agents, or such others
as I, the said Charles Lerat, my executors, administrators, or assigns, should
at any time agree with, and no others, -from time to time and at all times
thereafter during the term of years therein expressed, should and lawfully
might make, use, exercise, and vend my said Invention within that said
part of His said Majesty's Kingdom of Great Britain called England, His
Dominion of Wales, and Town of Berwick-upon-Tweed, and also in all His
said Majesty's Colonies and Plantations abroad, in such manner as to me,
the said Charles Lerat, my executors, administrators, and assigns, or any of
them, should in my or their discretions seem meet, and that I, the said
Charles Lerat, my executors, administrators, and assigns, should and lawfully
might have and enjoy the whole profit, benefit, and advantage from time to
time coming, growing, accruing, and arising by reason of the said Invention,
for and during the term- of years therein mentioned, to have hold, exercise,
and enjoy the said licence, powers; priviledges, and advantages therein-before
granted or mentioned to be granted unto me, the said Charles Lerat, my
executors, administrators, and assigns, for and during and unto the full end
and term of fourteen years from the date of the said Letters Patent next and
immediately ensuing, and fully to be compleat and ended, according to the
Statute in such case made and provided; in which said Letters Patent is
contained. a proviso that if I, the said Charles Lerat, should not particularly
describe and ascertain the nature of my said Invention, and in what manner
the same is to be prepared, by an instrument in writing under my hand and seal,
and cause the same to be inrolled in His Majesty's High Court of Chancery
within four calendar months next and immediately after the date of those
His said Majesty's Letters Patent, that then those His said Majesty's Letters
Patent, and all liberties and advantages whatsoever thereby granted, should
utterly cease, determine, and become void, anything therein-before contained
to the contrary thereof in anywise notwithstanding.
NOW KNOW YE, that I, the said Charles Lerat, in compliance with the
said proviso, do hereby describe and ascertain the nature of my said Invention,
which is to be prepared in the manner following (that is to say):-
Of antimony, prepared, two ounces, and mercury, prepared, two ounces,
dissolved and divided in aqua regalis; put the whole, with an handfull of com-

page_text: mon salt, in a large bottle for to mix it well, then put it in a pipkin and wash
it eight or ten times with clean water; let it dry, and throw thereon good
spirit of wine; set it on fire, stirring it always, then add of salt of cinnamon
one ounce; throw thereon again spirit of winc, set it on fire, stirring it all the
while; do the same over again five or six times, and let it dry.
In witness whereof, I have hereunto set my hand and scal, this
Eighteenth day of April, in the tenth year of the reign of His said
Majesty King George the Third over Great Britain, France, and
Ireland, and in the year of our Lord One thousand seven hundred and
seventy