admissible, it will serve as an answer to
the greater part of your questions. I have only one remark to add,
which is, that however great the force is of magnetism employed, you
can only convert a given portion of steel into a magnet of a force
proportioned to its capacity of retaining its magnetic fluid in the
new position in which it is placed, without letting it return. Now
this power is different in different kinds of steel, but limited in
all kinds whatever.
TO MESSRS. DUBOURG AND D'ALIBARD.
_Concerning the Mode of rendering Meat tender by Electricity._
MY DEAR FRIENDS,
My answer to your questions concerning the mode of rendering meat
tender by electricity, can only be founded upon conjecture; for I
have not experiments enough to warrant the facts. All that I can
say at present is, that I think electricity might be employed for
this purpose, and I shall state what follows as the observations or
reasons, which make me presume so.
It has been observed, that lightning, by rarefying and reducing
into vapour the moisture contained in solid wood, in an oak, for
instance, has forcibly separated its fibres, and broken it into small
splinters; that by penetrating intimately the hardest metals, as
iron, it has separated the parts in an instant, so as to convert a
perfect solid into a state of fluidity: it is not then improbable,
that the same subtile matter, passing through the bodies of animals
with rapidity, should possess sufficient force to produce an effect
The flesh of animals, fresh killed in the usual manner, is firm,
hard, and not in a very eatable state, because the particles adhere
too forcibly to each other. At a certain period, the cohesion is
weakened and in its progress towards putrefaction, which tends to
produce a total separation, the flesh becomes what we call tender, or
is in that state most proper to be used as our food.
It has frequently been remarked, that animals killed by lightning
putrify immediately. This cannot be invariably the case, since a
quantity of lightning sufficient to kill, may not be sufficient to
tear and divide the fibres and particles of flesh, and reduce them to
that tender state, which is the prelude to putrefaction. Hence it is,
that some animals killed in this manner will keep longer than others.
But the putrefaction sometimes proceeds with surprising celerity.
A respectable person assured me, that he once knew a remarkable
instance of this: A whole flock of sheep in Scotland, being closely
assembled under a tree, were killed by a
BY ABBOTT LAWRENCE ROTCH.Page 1
A hollow Globe 12 feet Diameter was formed of what is called in England Oiled Silk, here _Taffetas gomme_, the Silk being impregnated with a Solution of Gum elastic in Lintseed Oil, as is said.Page 2
I thought it my Duty, Sir, to send an early Account of this extraordinary Fact, to the Society which does me the honour to reckon me among its Members; and I will endeavour to make it more perfect, as I receive farther Information.Page 3
I just now learn, that some observers say, the Ball was 150 Seconds in rising, from the Cutting of the Cord till hid in the Clouds; that its height was then about 500 Toises, but, being moved out of the Perpendicular by the Wind, it had made a Slant so as to form a Triangle, whose Base on the Earth was about 200 Toises.Page 4
Sir, The Publick were promised a printed particular Account of the Rise & Progress of the Balloon Invention, to be published about the End of last month.Page 5
Faujas de St.Page 6
Multitudes in Paris saw the Balloon passing; but did not know there were Men with it, it being then.Page 7
I was happy to see him safe.Page 8
When we have learnt to manage it, we may hope some time or other to find Uses for it, as Men have done for Magnetism and Electricity of which the first Experiments were mere Matters of Amusement.Page 9
Balloon we now inhabit.Page 10
Between One & Two aClock, all Eyes were gratified with seeing it rise majestically from among the Trees, and ascend gradually above the Buildings, a most beautiful Spectacle! When it was about 200 feet high, the brave Adventurers held out and wav'd a little white Pennant, on both Sides their Car, to salute the Spectators, who return'd loud Claps of Applause.Page 11
FRANKLIN P.Page 12
_ au nomme Bertrand.Page 13
--Transcriber's note-- A caret (^) indicates the following character or characters were printed in superscript.Page 14
Pilatre de Rozier"; p.