Satf, to Fresh IVaief. 243 



-f ttorse mackerel Cra1)8 .u 



+ Pollack + Oysters 



Prawns + Muscles. 



Shrimps 



There appears no t^eson why liirtle should not also be culti- 

 yated, whether they would breed or not. The peacock, pintado, 

 pheasant, and common fowl, are the natives of hot climates, and 

 have long been naturalized to cold ones ; and there is far less dif- 

 ference between the tempet*atures of the water in different cli- 

 mates than between those of the air. An excellent tuttle has 

 been taken in the Tamar at Saltash, after an unknown length of 

 residence. 



Art* X« On the Impurity of the^Pulverized Emetic Tartar 

 of the Shops. .^ 



[In a Letter to the Editor of the Quarterly Journal.] i' 



Sir, 



I AM induced to request your insertion in the Quarterly 

 Journal of the following facts, with regard to emetic tartar. Hav- 

 ing repeatedly noticed a portion of insoluble matter in making the 

 vinum antimonii tartarizati, I purchased some tartar emetic in 

 crystals, and much to my astonishment was charged nearly double 

 what I had previously paid for it in powder. I procured samples, 

 from several respectable druggists, and found in all cases the same 

 inconsistency in price. Upon careful examination, however, of 

 the powder, this was explained, for 1 found in all the samples, 

 after the triple tartrate had been carefully washed out by cold 

 water, at least ten per cent, and in two or three much more, of a 

 powder comparatively insoluble, and which proved to be princi*- 

 pally supertartrate of potash and tartrate of lime. I strongly sus*- 

 pect the manufacturers are in the habit, after boiling the tartar 

 with the Oxide of antimony and filtering, of evaporating immedi^ 

 ately to dryness that portion which is to be sold in powder ; this 

 will explain its impurity, and also its cheapness, when compared 

 with that which has been carefully crystallized. As uniformity 



R2 



