Intelligence , 399 
George Cotes, Jan. 31, machine for expediting the making of 
horse-shoe nails, brads, &c. 
John Grover, Feb. 7, improvements in the construction and fixing 
of coppers, boilers, and furnaces. 
John Falconer Atlee, Feb. 7, method of condensing and cooling 
spirits, in the process of distillation. 
James Glazebrook, Feb. 7, method of working and giving power 
to machinery, by means of air. 
John Nash, Feb. 7, method of constructing bridges of plate- 
iron, &c. 
Aaron Garlick, Feb. 7, machine for spinning and roving of cotton. 
Nicolas Dubois Dechemant, Feb. 15, table with a stove placed in 
the centre thereof. 
INTELLIGENCE. 
English Incendiary Fusees Examined > 
T he commandant in chief of the isle of Oleron, general De Grave, 
transmitted to the Society of Encouragement at Paris, an incendiary 
fusee, about a demimetre long, found on board of an English boat., 
which was wrecked on the coast of France. The society directed 
its committee of chemical arts to analyse the same ; and M. Gay 
Lussac, in the name of the committee, made the following report on 
the 2nd of August, 1809. 
The fusee which I examined was not entire ; it was about three 
decimeters long, and its internal diameter did not exceed a centi- 
meter. The envelope was formed of several folds of grey paper, 
pasted on each other, and the whole covered with a coat of oil paint, 
to resist moisture. The inflammable matter which it contained, 
had a grayish yellow colour, in which particles of sulphur \yere 
easily distinguishable ; on being lighted, it burned with a vivid 
flame about a decimeter and a half long, exhaling a very strong 
odour of sulphurous acid. The duration of its combustion was 
from ten to twelve minutes, for a length of three decimeters of the 
fusee. Having pulverized the inflammable matter, I treated 30,78 
grammes with water ; the matter which did not dissolve after re- 
peated washings, weighed 7.690 grammes ; it consisted of a mix- 
ture of sulphur and charcoal. I then treated this mixture with 
caustic potash, and obtained 0.504 grammes of charcoal; deducting 
this from the weight of the mixture, I deduced that of the suL 
