Hoyal College of Sirgeons, &c. £71 



ROYAL COLLEGE OF SLHGEOXS. 



The surgical prizes given by the college have this year 

 been adjudged as follows : — The prize for the best essay on 

 the " Diseases of the Joints," has been adjudged to Mr. 

 S. Cooper, of Golden-square : and that for the " Essay on 

 Hernia," to Mr. Lawrence, of John-street, Adelpbi. 



We understand that both these essays will very shortly be 

 given to the public. 



SOCIETY OF ARTS AND SCIENCrS OF HAARLEM. 



This Society has proposed the following as prize questions ; 

 the answers to be transmitted (post free) to M. Van Marum, 

 their secretary, at Haarlem, on or before the 1st of Kovem- 

 ber 1807. The author of the best of each of the memoirs 

 is to receive a gold medal or thirty ducats. The papers may 

 be written in Dutch, French, Latin, or German. 



1 . What have the most recent observations taught us on 

 the subject of the influence of oxygen of the atmosphere ? 

 Is it connected with light in the alteration of colours ; and 

 what utility may be drawn from such observations ? 



2. As experience has shown that rain water, which runs 

 through leaden pipes, or is kept in lead cisterns, carries off 

 so miich of the metal that the water becomes prejudicial to 

 health, and occasions fatal diseases ; and as such food or 

 liquids w^iich are prei)ared in contact with lead are also de- 

 leterious, the Society, therefore, requires to be informed of ■ 

 the best method to prevent or remedy these pernicious ef- 

 fects. The Society also particularly requires it lo be pointed 

 out, from actual experiments and observations, in what cir- 

 cumstances lead communicates its pernicious qualities lo 

 water ? Whether lead might not be so wrought as to prevent 

 any bad consequences ? Whether we have any reason to be 

 afraid of the white lead collected in leaden pi])c3 ? What is 

 the best method of avoiding any bad consequences from this . 

 cause ? To point out if there are anv good grounds for think- 

 ing that the glazing which is made use of for China or stgne 

 ware, communicates any of Its pernicious qualities to the 

 victuals or drink which may be put into vessels made of these 



Vol. 27. No, 107- jipril 1807. S materials; 



