Mineral Fusible Cement. 81 
Arr. [X.—WNotice of the Mineral Fusible Cement of H. Fitz Lowitz. 
We have received from a respected correspondent, the following 
account of a composition whose properties appear, from the state- 
ment, to be sufficiently important to entitle it to a place in this Jour- 
al e account of the properties has been already printed ; but 
that of the use, tools, &c. has been communicated for this Journal in 
a lithographic copy. 
In announcing the Mineral Fusible Cement for sale in England, it 
is right to state that it has been for some years in use on the Conti- 
nent; particularly in Sweden and Denmark, whose engineers, after 
repeated trials, recommended it to their respective governments. 
The Honorable Board of Ordnance in England, directed various 
trials of it to be made at the King’s Mews, Pall Mall East, in August 
last; in the presence of several officers of the Royal Engineers, and 
other scientific gentlemen. The experiments were conducted under 
Captain Smith of the Royal Engineers; who was of opinion after 
repeated trials, that it was impervious to water, and that its adhesive 
qualities were greater than any cement he had ever known. 
We shall only cite a few of the numerous trials made at the King’s 
Mews, to shew its resistance to water and damp, and its powers of 
adhesion. Ist. A case of wood was united with the cement only, 
and lined with it; and in dess than half an hour filled with water ; it 
was perfectly tight. 2d. To shew its adhesive qualities, two plates 
of iron, four inches square, with a hook in each, were united with the 
cement by a seam or joint of one eighth of an inch; on being sus- 
pended, it bore a weight of upwards of eight hundred pounds before 
they separated. 3d. The flat side of a brick was united to an up- 
right board by this cement, another to that, and so on, until the fwen- 
tieth brick was attached ; when one of the bricks split, but none of 
the joints gave way. This experiment was repeated frequently, but 
in every instance the cement proved stronger than the bricks. 4th. 
A piece of iron, with a hook at the upper end and shank three inches 
long, was inserted ina hole in a block of granite, and there fixed 
with this cement instead of lead; the block of granite was attached 
by the cement to another of the same size, weighing together about 
three hundred pounds; the two were suspended by the hook, and 
weights to the extent of three hundred pounds were placed on the 
upper stone, but nothing gave way: the iron was not dovetailed at 
Vor, XVI.—No. 1. 
