152 Lectures.—Patents. 
impression, upon a scale either extended, reduced, or the same 
as the original. The Arts, we understand, furnish no instance of 
an instrument resembling this, either in its appearance or opera- 
tion, save what is called the Pentagraph, and ‘even from this ma- 
chine it differs materially. The beam in the former is suspended 
vertically from_an.universal joint, whereas the beam of the latter 
is supported on an horizontal plane. There is also a counter- 
poise added to the Apograph above the centre of motion, which 
relieves the hand almost entirely of the weight it would otherwise 
have to sustain when the beam is out of the vertical position.— 
Ayr Advertiser. ——_—_—— 
HYDROPHOBIA. 
(From a French Journal.) 
A series of experiments have recently been made at the Vete- 
rinary School in Paris, relative to the cure of hydrophobia. 
The object in view was, to confirm the efficacy of a specific 
imported from Italy, which, it is expected, will not only act as 
a preservative immediately after the bite, but will also.operate 
as a cure even after the fatal symptoms have appeared. The 
result of these experiments is not yet ascertained, 
LECTURES. 
St. George’s Medical and Chemical School.—The Courses 
will commence the first week of October. 
1. On the Practice of Physic, with the Laws of the Animal 
(Economy ; by George Pearson, M. D. F. R. 8S, Senior Physician 
to St. George’s Hospital, &c. 
2. On Chemistry; by W. T. Brande, Professor Royal Insti- 
tution, Sec. R.S., &c. 
3. On Therapeutics with Materia Medica; by George 
Pearson, M. D. F.R.S., &c. &c. 
LIST OF PATENTS FOR NEW INVENTIONS. 
To Robert Dickinson, of Great Queen-street, Lincoln’s-Inn- 
fields, for certain improvements in the construction of vessels or 
crafts of every description, whereby such vessels or crafts may be 
rendered’more durable than those heretofore constructed for the 
purpose of navigation.—Dated 14th July 1821.—6 months al- 
lowed to enrol specification. 
To Samuel Cooper, engineer, and William Miller, gentleman, 
both of Margate, for certain improvements on printing machines. 
—17th July.—6 months. 
To Frederick Mighells Van Heythuysen, of Chancery-lane, 
for anew method of propelling small vessels or boats through water 
and light carriages over land,—23d July 1821,—6 months. 
To 
