PARIS GREEN. 327 



oxide, which may arise from intentional addition of white arsenic, 

 as .well as from careless manufacture. This is a serious adul- 

 teration, for white arsenic is a cheaper material, and its solu- 

 bility in water renders its presence in anything but small quantities 

 a source of much danger to foliage from scorching. Other 

 adulterations have been detected, but the one just referred to is 

 the most prevalent and most objectionable. 



Paris green is essentially copper aceto-arsenite, and, if pure, 

 should contain an equivalent of 58.65 per cent, arsenious oxide, 

 31.29 copper oxide and 10.06 acetic acid. The commercial article, 

 however, usually contains small quantities of moisture and sand 

 and varying amounts of sodium sulphate. 



Twelve samples, representing eight manufacturers, were pur- 

 chased from dealers by the Station sampling agent. A descrip- 

 tion of these follows : 



19481. Made by A. B. Ansbacher & Co., New York. Sold 

 by Lyon & Ewald, New London. 



18662. Made by A. B. Ansbacher & Co., New York. Sold 

 by the Sisson Drug Co., Hartford. 



18634. Made by E. J. Barry, New York. Sold by Odell's 

 Pharmacy, NeW Britain. 



18509. Made by E. J. Barry, New York. Sold by J. H. & 

 W. E. Cone, Hartford. 



18704. Made by James A. Blanchard, New York. Sold by 

 F. S. Piatt, New Haven. 



19547. Made by Morris Hermann & Co., New York. Sold 

 by D. B. Wilfeon Co., Watei-bury. 



18569. Made by Leggett & Bro., New York. Sold by Lock- 

 wood & Palmer, Stamford. 



18508. Made by Leggett & Bro., New York. Sold by M. H. 

 MaJlett, New Milford. 



18512. Made by I. Pfeiffer, New York. Sold by Frank M. 

 West, Bridgeport. 



18510. Made by C. T. Raynolds & Co., New York. Sold by 

 H. K. Brainard, Thompsoaville. 



18511. Made by C. T. Raynolds & Co., New York. Sold by 

 Danbury Hardware Co., Danbury. 



18663. Made by The Sherwin-Williams Co., Newark, N. J. 

 Sold by R. E. Page, Hartford. 



