Edible Products. 



Samples Received prom London 

 Dealers. 



Prnssic Acid. 

 Per cent. 



f White Rangoon 



532 



[June 1908. 



j beans, 

 Firm A.— i White Rangoon 



0-025 



beans, hand 

 (. picked ... 027 



Firm B. — White Burma 



beans ... 0-026 



Firm C. — Tinned white Lima 

 beans of American 

 origin none. 

 Samples Received from Seedsmen 

 in Paris, and Guaranteed to be 

 Produced by Phaseolus lunatus. 



Prussie Acid. 

 Haricot de Lima, large cream None. 



" Sieva Traces, too small 



to estimate. 



These results indicate that, whilst 

 there are varieties of the white beans of 

 Phaseoius lunatus on the market which 

 yield uo prussie acid, some of the white 

 Rangoon or Burma beans at present 

 available in commerce yield this sub- 

 stance in quantities of some importance 

 having regard to their use as a feeding 

 stuff, whilst others, such as the white 

 Rangoon beans obtained at Leith, yield 

 mere traces. 



It should be pointed out, however, 

 that the quantities of prussie acid yield- 

 ed both by red and white Rangoon beans 

 are much smaller than those obtained 

 from the Java and Mauritius beans. As 

 a very large number of determinations 

 of the amounts of prussie acid yielded 

 by these various classes of beans have 

 now been made, it may be useful 

 to summarise the results in tabular 

 form. 



Origin and Colours 

 of Beans. 



Dunstan, 

 Henry and 

 Auld. 



Java. 



Mixed beans of all colours... 

 Black beans 

 Purplish-black beans 

 Wine-red beans ... 

 Reddish-brown beans 

 Bright maroon beans 

 Light brown beans with 



dark spots 

 Pale brown with dark spots 

 Cream white 



Black with white stripes ... 



Mauritius. 

 Purplish-black 

 Brown 

 Light brown 



Burma. 

 Pale brown with purple 



spots 

 Cream white 



France. 

 "Haricots de Lima," large 

 cream 



"Haricots de Sieva," large 

 cream 



"Haricots de Cap Marbre" 

 Madagascar. 



White 



Prussie acid. 

 Per cent. 



0-038— 0-123 

 107 

 0-11G 



0-103 

 0-104 

 0-105—0-110 

 0-062 



0-088 

 0-087 

 0041 



0-004—0-024 

 Nil-0 027 



Nil. 



Traces. 

 Traces. 



Guignard. Kohn-Abrest. 



Prussie acid. 

 Per cent. 



0-052-0-012 

 046 



Tatlock and 

 Thomson. 



0-052 



0-011 

 0-006 



Traces. 

 0-004-0-008 



0-008 



Prussie acid, j Prussie acid. 

 Per cent. j Per cent. 



0-052 

 0-058 

 0-037 

 0-050 



0-041 

 0-126 

 037 

 058 



0-027- 0-137 

 0042 

 0-031 



0-038 



0-038 

 0-027 



0-O0O9 



In addition to the foregoing, a number 

 of miscellaneous samples of beans nave 

 been received at the Imperial Institute 

 for examination in connection with this 



inquiry, and as one of these, which is 

 probably not the product of Phaseoius 

 lunatus, also yields traces of prussie 

 acid, it may be of interest to record the 

 results here. 



I 



