Miscellaneous Intelligence. oe 
gamboge of Siam, is not yet completes and, until tinteon information 
on this 2 eb be obtained, which the author expects to receive in the. 
course — a it appear advisable not to attach to it a spore 
. Patent for a Safety Paper granted to W. Stones, ‘Chow. Gaz., 
Oct., 15, 1851, 400,)—The object of this invention is to anda iechuiel a. 
‘paper that will indicate by. discoloration of its surface, when an attempt 
has been made to extract a characters therefrom ; and thereby to 
aflurd 10 bankers, merchan s, and others, protection against forgery, or 
ye menpating: with cheques bills of exchange, and other ae 
docu 
the color of the paper. The mode of applying this substance 1s by 
mixing it with the pulp or size, or the paper may be saturated with a 
solution of the metallic iodid. ‘The ferrocyanid or ferricyanid of potas- 
1o0’be: mixed with the pulp in the engine; but it may, — the — 
chemical ingredients, be used in an after stage of the proce 
‘he’ Proportions for these several sete used for sion paper 
' S€Nsitive to the action of reagents, are by no means absolute; but as a 
Suide it may be a that the following have been found to. answer the 
Purpose, viz.: for a ream of post vegan sale 18 Ibs.— 
02. iodid ora bromid) of potas 
= oz. ee sa (or ah ceaen of potassium, 
\b. starch. 
sind russian-blue- poerasente which will become diffused over the adjacent 
‘on of the paper.—Sealed Feb. 24, } 
~ On the Manufacture of Candles; by W. CarPMagL, Esq., (Proe: 
fi re Feb. 21, 185], ‘p. 21.) —Former ly the classes: at phason Gl 
ba soa a rude process, ‘consisting of hanging a andes 
+e a 4 
