g-iS ON PREPARATIONS OF GOLD. 



wliich has been attached to the iron legs, will secure the 

 spire from the effects of lightning. 



* I am, Sir, 



Your obedient servant, 

 RICHARD LOVELL EDGEWORTH. 



It has occurred to rae since the spire was finished, that, 

 instead of a temporary wooden pedestal, an iron permanent 

 pedestal might be substituted, which might b* formed by a 

 continuation of the legs of the spire. At the base of this 

 pedestal, if it were thought necessary, a brick arch might 

 be turned on the lowest diaphragm. This wuld add 

 weight, and consequently solidity to the mass. This pedes- 

 tal must be connected with the tower by holdfasts and 

 wedges. 



I mention this, not because I find any inconvenience in 

 what I have executed, but to communicate to the public all 

 that has occurred to me on this subject. 



II. 



Experiments on some Preparations of Gol<Ji : by Mr. 

 Vauquelin*. 



Preparations of ^INCE Dr. Chrestien, of Montpellier, mentioned the ef- 

 go!d employed fects he had obtained from the use of preparations of gold 

 raedicmally. j^ syphilitic and lymphatic complaints ; and remarked, that 

 these effects were never attended with the ill consequences, 

 to which mercurial preparations often give rise, other physi- 

 cians have begun to make use of them. 



The forms in which gold has hitherto been employed are, 

 1, in a state of minute divisions 2, the muriate: 3, the 

 oxide precipitated from a solution of gold by potash : 4, 

 the precipitate thrown down by metallic tin from the mu- 

 riatic solution of gold. 



f Annal. de Chim.vol. LXXVII, p. 22}, 



There 



