136 SCIENTIFIC NEWS. 



Mr. Day's portant * ; but let it be confidered that it will not amount t» 

 w *, tc nian s re " more than three pence in the pound of a rate on houfes, and 

 that the firft will be the fole expence — probably to be faved by 

 diminifliing the number of patroles to one half (or lefs) of what 

 they now are. But trifling indeed will be the expence when 

 compared with the Iofles fuflained by the public in depreda- 

 1 tions, which, according to a late work on the police of the 

 metropolis, amounts to two millions and upwards. 



The befl fituation for thefe machines will be at each end of a 

 watchman's round, perhaps certain rounds will require three. 

 They ought to ftand in a convenient recefsin the flreet, fecured 

 by rivetings of iron, or let into a wall, or placed on a ftrong 

 bracket within the iron railing of an area ; and, if the dial 

 plates were fuffered to appear, would be ufeful in the day as 

 well as in the night : as an eight-day clock it would require 

 no attention to it's movement but once a week, and the morn- 

 ing infpector might attend to the flight duty of winding it up. 



The annual expence of keeping it in repair is too trifling to 

 be taken notice of. 



I have to remark that the fame machine will anfwer in 

 cuftomhoufes, warehoufes, banking-houfes, docks, and every 

 place where vigilance, to be ufeful, muft be exacl. 



Some Account of a pretended new Metal offered for Sale, and 

 examined by Richard Chenevix, Esq. 

 Interefting paper AN extremely curious and interefting paper by R. Chene- 

 palladium. V1K > Efq, was read on Thurfday the 12th, and the following 



week, at the Royal Society. It purported to be an inquiry 



into the properties of a fuppofed new metal called palladiuf/i, or 



newfiker. 

 The manner in This fubftance announced to the public in a fmall printed 

 ^ff'adt' T* P a P er > partially circulated, was fold at an extravagantly high 

 public. price. The notice is as follows ; it is given verbatim, as the 



language in which it is written is not unworthy of attention f . 



* It is prefumed that each time piece will amount to not lefs than 

 .twelve guineas, and each round will require two. D— — . I ap- 

 prehend they may be made for much lefs than half the money. 

 W.N. 



T I received a fmall piece by the poft. The piece of the Ipecimen 

 was at the rate of about one milling per grain. 



PALLADIUM 



