Lectures.— Patents for New Inventions, sfS 



iwpdical work nearly ready for the press : the mistake arose 

 from his having been for some time engaged in the prepa- 

 ration of these Lectures. 



Mr. George Singer is now constructing a powerful Vol- 

 taic Battery; to be employed in a Course of public Lectures 

 ou the Chemical Agencies of Electricity. These .Lectures 

 will comprise the Exhibition of all the recent Discoveries ; 

 and are arranged for delivery early in the month of June, at 

 the Scientific Institution, No. 3. Prince's-slreet, Cavendish- 

 square. 



Dr. George Pearson, F.R.S., and Senior Physician to 

 St. George's Hospital, will recommence his Summer Course 

 of Lectures on Physic and Chemistry, on Monday June 6, 

 at No. 9, George- street, Hanover- square, at the usual 

 Morning Hours j viz. the Therapeutics at a quarter before 

 Eight: the Practice of Physic at half after Eight ; and the 

 Chemistry at a quarter after Nine. — Clinical Lc<:tures are 

 given, as usual, on the Patients of St. George's Hospital 

 every Saturday morning, at Nine o'clock ; and the Prac- 

 tice of Vaccination \\\\\ be taught at the Institution in 

 Broad-street, Golden-square, during the Summer Course. 



j;iST OF PATENTS FOR NEW INVENTIONS. 



To Eichard Willcox,of the parish of St. Marv, Lambeth, 

 mechanist; for certain niachinery, whereby all objects in 

 the sea or clear water can be discovered from the surface 

 thereof with accuracy; and for raising, suspending, and 

 towing into harbour ships of war, and every other descrip- 

 tion of vessels that are or may be sunk at sea or near the sea- 

 coast, channels, harbours, road -steads, or other places, and 

 removing sunken rocks or other obstructions in rivers, har- 

 bours, and channels. March 3, 180S. 



To John Cowden and John Partridge, of Francis- street, 

 Tottenham Court Koad, stove-grate manufacturers; forcer- 

 tain improvements in register and other stoves. March 3. 



To Thomas Jeflerson, of the parish of St. Saviour, Souih- 

 wark, tanner and leather-dresser; Joseph Ellis, of the same 

 parish, tanner and leather-dresser; and Alexander Galloway, 

 ofHolborn in the county of Middlesex, mechanist and engi- 



A a 3 neer ; 



