Buch 
A treatise on adulterations of food, and culinary poisons : exhibiting the fraudulent sophistications of bread, beer, wine, spirituous liquors, tea, coffee, cream, confectionery, vinegar, mustard, pepper, cheese, olive oil, pickles, and other articles employed in domestic economy, and methods of detecting them / by Fredrick Accum
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PRELIMINARY OBSERVATIONS,

inferior value are substituted for more costlyand genuine ingredients, the sophistication,though it may affect our purse, does notinjure our health. Of this kind are the ma-nufacture of factitious pepper, the adulter-ations of mustard, vinegar, cream, &c.Others, however, are highly deleterious;and to this class belong the adulterations ofbeer, wines, spirituous liquors, pickles, sa-lad oil, and many others.

There are particular chemists who makeit a regular trade to supply drugs or nefa-rious preparations to the unprincipled brew-er of porter or ale ; others perform the sameoffice to the wine and spirit merchant; andothers again to the grocer and the oilman.The operators carry on their processeschiefly in secrecy, and under some delusive