On the Effects of Galvanism on Asthma, ^c. 419 



those of the opposite continent ; and more especially to procure 

 intelligence respecting the numerous examples of the formation 

 of new land and banks under water from the deposition of gravel, 

 ?and, and alluvial matters, at the mouths of rivers, in bays and 

 creeks along the shores, or in the open sea. 



XCVI. ilir. Pi'2'3 Method of preparing Charcoal and Chalks for 

 Drawing *. 



-I HE finest-grained charcoal tliat can be procured is sawed Inta 

 slips of the size and form required, and put into a pipl.in of 

 melted bees'-\vax, where they are permitted to remain near a 

 slow fire for half an hour or more, in proportion to the thickneriS 

 of the charcoal : they are then taken out, and, when perfectly 

 cool, are fit for use. By adding a small quantity of rosin to tha 

 wax, thev may lie made considerably harder; and on the con- 

 trary, should they be required softer, a little butter or tallow will 

 answer the purpose. The advantages these pencils possess aie, 

 that they can be made at the most trifling expense, and at any 

 lime ; and that drav/ings made with them are as permanent a^ 

 ink, and not liable to injury by being rubbed, or remaining in 

 t!ie damp. 



The above process will harden both red and black chalks, 

 and make them permanent also. 



XCVII. On the Effects of Galuaniam in Asthma and Diseases 

 of the respiratory Organs. By A Correspondent. 



i HE successful experiments of Dr. VV. Philip and the Wor- 

 ''•oster practitioners should have attracted more attention from 

 ijiodical inquirers than they appear to have hitherto dotie. The 

 phsenomena of galvanism are yet very imperfectly known ; and 

 many may still be discovered by multiplying experiments in this 

 cepartment of science, and particularly its application to the 

 itnima! oeconomy. It is, however, a general propensity of the 

 Jii-v to expect a complete and perfect reno\*at:on of a vitiated 

 tuastitution merely by tlie application of some one potent drug ; 

 — an expectatior., uerhaps, not less injurious to the progress of 

 V- -ience (so far as it is concerned with medical practice) than the 

 oosolete notions of blending together almost all the known drugs 

 into a bingle dose. Hence, it is probable, that as the application 

 (i{ galvanism to the respiratory organs has not wrought any mi- 



' From Trari)nction$ cf t/ie Spcietvfcr the Fncottrugcmenl of Arts, Manu- 

 'i.i.'.ures and Coirricrce, for the yenr I8l6. — The filvrr J^-,? Medul was votfd 

 : J ilic i-ocictv to Mr. I'ye for t^)l!^ roHmumir ation, 



D £■ 2 racles, 



