68 Trigonometrical Survey.— Lectures. —Patents. 
other. On the nights of the 24th and 25th the mercury likewise 
fell at Frankfort to 26 inches six lines, without being accompa- 
nied by any other change in the atmosphere but a strong wind, 
which did not rise to a tempest as in other places. ‘The wind 
was stronger in the night of the 29th, though the mercury had 
risen a little.] ——_——- 
TRIGONOMETRICAL SURVEY. 
Captain Vetch and Mr. Drummond, the engineer officers in- 
trusted with the conduct of the Trigonometrical Survey in the 
North of Scotland, have finished their task in Orkney and Zet- 
land, by establishing in those clusters of islands the several posi- 
tions which serve to connect them with the main land of Scot- 
land. In their operations they were attended by the Protector 
gun-brig, Captain Hewet commander; and that gentleman was 
employed at the same time in a nautical suryey of various har- 
bours among those islands, which stood in need, particularly in 
Zetland, of more accurate charts than have yet been given to 
mariners. The laborious and hazardous task has been brought 
to a conclusion, with one loss; Mr. Fitzjames, midshipman, and 
four men, having gone from the rendezvous at Calfsound in Eda, 
to the island of Sanda for some provisions, were lost on their re- 
turn, in one of those fearful currents of tide (the Lashy roast), 
which are frequent among those islands. 
MEDICAL AND CHEMICAL LECTURES. 
Dr. Pearson’s Lectures on Physic will commence on Friday 
the Sth of February, at No. 9, George-street, Hanover-square, 
at 9 o’clock in the morning; and Professor Brande will com- 
mence his Course of Chemistry in the same week, Pupils to 
either of the Lecturers are free to both, 
ey 
LIST OF PATENTS FOR NEW INVENTIONS. 
To Julius Griffith, of Brompton Crescent, Middlesex, esq , 
who, in consequence of discoveries made by himself, and commn- 
nications made to him by foreigners residing abroad, is in pos- 
session of certain imprevements in steam carriages, and which 
steam carriages are capable of transporting merchandize of all 
kinds as well as passengers upon common roads, without the aid 
of horses. —Dated 20th December 1821.—6 months allowed to 
_ enrol specifications. 
To Pierre Erard, of Great Marlborough-street, Middlesex, 
musical-instrument maker, who, in consequence of communica- 
tions made to him by a certain foreigner residing abroad, is in 
possession of an inyention of certain improvements on piano 
fortes and other keyed musical instruments.—22d Dec.—6 a 
o 
