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Sect. VIII.] 



MINERALOGY. 



245 



very simple goniometer has also been constructed 



Dr» Leeson.* 



It Is probable that to chemical composition th- voyager 

 will chiefly look for aid, more especially if he be a medical 

 officer, and therefore likely to have become sufficiently 



V 



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acquainted with chemistry for the purpose. The modes 

 of investigation will readily present themselves to one so 

 qualified,! and we would suggest that no surveying voyage 

 should be sent, more particularly to distant countries, 



for 



without one of those little chests of needful things 

 chemical research which are prepared for the purpose4 

 For those not sufficiently versed in chemistry it might be 



* < 



Memoirs of the Chemical Society/ vol. iii. p. 486. 



t The following works will be found useful :— Will's * Outlines of 

 Qualitative Analysis/ Fresenius's 'Qualltatiye and Quantitative Ana- 

 lysis/ ParnelFs 'Qualitative and Quantitative Analysis/' and Eose's 

 'Analysis/ translated by Normandy, 



X Griffin (of Glasgow, and of Baker Street, London) and ethers fit 

 up \-ery compact and useful chests of this kind. They necessarily 

 vary m price according to their contents. For about 8Z., a chest of 

 about 1^ cubic feet, not a cumbrous size for a cabin, may be obtained. 

 It would contain apparatus and substances sufficient for discriminating 

 all well-known ores and minerals, including a blowpipe apparatus with 

 the necessary fluxes and reagents, as also a selection of the most useful 

 instruments for testing in the wet way, with a collection of tests in the 

 dry state, and stoppered bottles to contain solutions ; also a set of bottles 

 with pure acids. 



More complete chests may be obtained for about 15/. or 16/. — far more 

 vahiable for long voyages, during which deficiencies cannot be expected 

 to be supplied. These are divided into two chests, one containing the 

 things needful for more constant, the other large articles for occasional 

 use, as well as duplicates of apparatus liable to be broken, with an extra 

 s^tock of chemicals. These chests usually occupy about 4 cubic feet, 

 and contain apparatus and chemicals sufficient for the complete quan- 

 titative analyses of minerals, or the separation of the component parts 

 of a mineral, in quantities sufficient for an accurate analysis. They 

 include platinum crucibles, Bohemian test tubes, Berlin porcelain 

 crucibles and capsules, complete blowpipe apparatus, &c. &c. 





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