On the Cultivation^ the Parsmp. 405 



I made a similar one with 15 parts only of tin in place of 

 20 to one of antimony, and found a surplus. 



In another experiment, with the tin in the proportion of 30 

 to one, the result gave me back exactly the proportion of anti- 

 r.wnj put into the mixture. 



I last of all put only a centime, and afterwards the fourth of a 

 oentime of antimony to 100 parts of tin, and recovered them 

 perfectly. 



The antimony in these different experiments was extremely 

 divided, of a blackish gray colour, settled easily at the bottom 

 of the vessel, and occupied, in proportion to its weight, a very 

 considerable sjjHce, so as to enable even imponderable quantities 

 to be discerned. 



It is after all very true, that antimony as well as tin is soluble 

 in hydrochloric acid, and that its presence was not indiscernible 

 in the hvdrochlorate of tin produced in the fourth experiment. 

 But tliis I think may be easily reconciled with the truth of the 

 preceding results. The hydrochloric acid having a remarkable 

 affinity to tin, would of course saturate it first, and thus lose al- 

 most entirely its power of acting on theaniimony. It is hard to 

 believe that any tin can remain in alliance with the antimony, 

 when we find the different residues corresponding so exactly 

 v/ith the (luantities of antimony introduced ; and much more 

 probable that the portion of antimony observable in the lijdro- 

 chlorate of tin, mav be a portion not apjjreciable by weight. 



As it often happens that lead is joined to the tin already united 

 with tha antimony, I made an experiment in order to ascertain 

 at wliat point this new metal might be able to change the re- 

 sults obtained by my preceding mode of analysis ; and I perfectly 

 satisfied myself that the uiixture of tin and antimony may con- 

 tain large enough cjuantities of lead without affecting the success 

 of the operation. 



XCIII. On the Cultivation, of the Vaisni[), as it is practised in 

 Guernsey. By Dr. Maccuixoch, oJ IVonlivich'-^. 



X HK great superiority of this root, as cultivated in Guernsey 

 and the neighbouring islands, to its produce in Britain, — the 

 higli reputation which it bears among tlic farnu'rsin those islands, 

 and the very little knowledge of it, which those of Britain seem 

 to possess, — have induced me to lay before tlie Society a short 

 account of the methods practised in its culture in Guernsey. 



1 am inclined to think, that it will be found nnich more wortliy 

 the attention of agriculturists than has been hitherto supposed, 



* rVoiii the Transactions of the Culefioujan Ilortitulturai Society. 



C c 3 and 



