THE NEW YORK JOURNAL OF PHARMACY 



Substance. 



Acid, Hydrochloric. 



Acid, Hydrocyanic, Diluted 



Acid, Nitric 



Alcohol, Ethyl 



Chloroform 



Creosote 



Ether 



Fluidextract Belladonna 



Fluidextract Ergot 



Glycerin 



Guaiacol 



Oil Santal 



Oil Wintergreen, Synthetic 



Phenol, Liquified 



Solution Arsenous and Mercuric Iodides. . 



" Arsenous Acid 



" Iodine, Compound 



" Potassium Arsenite... 



" Potassium Bromide, 10% 



" Potassium Iodide, 60% 



" Strychnine Sulphate (f-^i=l gr.). 



Spirit Ammonia Aromatic 



Spirit Nitrous Ether 



Syrup Ferrous Iodide 



Ticture Aconite 



" Digitalis 



" Ferric Chloride 



' ' Hyoscyamus 



" Iodine 



" Nux Vomica 



" Opium 



" Opium Camphorated 



" Strophanthus 



Water, Bitter Almond 



Water, Distilled 



SELENIUM. 



By Edward Kemp, Jr. 

 Selenium was discovered byBerzelius 

 in 1817. Its name is derived from the 

 Greek word for moon, on account of its 

 similarity to Tellurium meaning earth. 

 Selenium exists in three allotropic forms, 

 amorphous, red crystalline and gray 

 metallic crystalline. The last form of 

 selenium is of most interest to us. It 

 resembles sealing wax in appearance and 

 putty in the ease in wliich it can be cut. 

 The metal conducts electricity quite well 

 though it exerts a tremendous resistance 

 to the flow of the current. The resist- 

 ance, however, is in direct proportion to 

 the intensity of light thrown on the 



selenium wire. This fact has always had 

 a certain fascination to me, and no one 

 has ever been able to tell me why light 

 has such effect on this strange metal. 

 Some say it must be the influence of an 

 impurity found in the metal, but different 

 specimens of selenium vary a great deal 

 in their resistance to electricity. On 

 account of this quality it has often been 

 used as an actinometer. 



A very interesting experiment which I 

 conducted some time ago with what I 

 termed my Selenium Dog demonstrates 

 one use for the metal. The Dog was 

 made in the shape of a triangular box 

 having three wheels. The two front 

 wheels were driven by an electric motor 



