Emetic Tartar.'^LedurdS. "ksf 



k single electric fluid condensed in positive bodies, and rarefied 

 in those which are negative. 



Mr. Singer, in a communication alluding to the above experi-* 

 Inents, thus expresses himself: " A great number of your readers 

 are certainly not yet acquainted with these experiments, which 

 have excited considerable attention on the continent. I must 

 confess I had regal-ded them hitherto as of inconsiderable mo- 

 ment ; but on examining the results now transmitted to you by 

 M. de Nelis, they appear to me to merit the repetition which 

 he has requested, and I profiose to undertake it as soon as the 

 incessant occupation which my lectures, and some researches iu 

 Voltaic electricity, at present sujiplv, shall have subsided. 



" I will then, sir, with much pleasure submit to your readers 

 an account of these experiments, accompanied by such observa- 

 tions as their repetition may suggest." 



Mr. Thomas Forster is about to publish A Sketch of the new 

 Anatomy and Physiology of the Brain and nervous System of Drs. 

 Gall and Spurzheim, considered as comprehending a complete 

 System of Zoonomy. With Observations on its Tendency to the 

 Improvement of Education, the Punishment of Crimes, and the 

 Treatment of Insanity. Reprinted from The Pamphleteer, with 

 Additions. 



Another Edition of the London Pharmacopoeia, it Is said, Is 

 now in great forwardness, and will probably be soon before ^he 

 public. Among the most important of its improvements will be 

 the emetic tartar, which, we have been informed, is prepared 

 according to a verv elegant and simple process, contrived by 

 Mr. Hume, of Long Acre ; in which the common black sul- 

 phuret of antimonv is in one simple operation decomposed, yield- 

 ing an oxide suitable for the purpose, which requires merely to be 

 waslred before it be submitted to the super tartrate of potash. 



A correspondent, H. G., desires us to state, that every vulgar 

 fiactiton is in its lowest terms tiiat is not divisible by the differ- 

 ence between its rmmerator and denominator, or by some sub- 

 multiple of that difference. 



LECTURES. 



Middlesex Hospital. — Dr. Merriman's next Course of Leo 

 tuves, on Midwifery and the Diseases of Women and Children, 

 will l>c delivered at the above Hospital during the months of 

 April and May. The introductory Lecture will be read on Moh- 

 day, April the lOth, at Half past Ten o'clock. 



tlST 



