On. Mr. Henry's Aromatic Vinegar. 15*? 



low an Indifference, on the part of the public, to the claim? 

 of inventors. 



More than fifteen years ago, during the delivery of a courfe 

 ofledures, by my father, in this town, he haa occafion toi 

 notice a property of the radical vinegar, or acetic acid, which 

 had not, to his knowledge, been before obferved ; viz. its pro- 

 perty of diffolving camphor and various efTential oils. The 

 compound was found to pofTefs a moft pungent and agreeable 

 odour; and as the 'vinaigre des quatre voleurs had gained 

 much reputation in obviating intention, it occurred to him 

 that the newly difcovered folution would have ftill more 

 powerful effefts in confequence of its high ftate of concen- 

 tration. A bottle of this preparation he gave to a late adlive 

 magiflrate and philanthropilt (J. B. Bayley, Efq. F.R.S.), 

 who, in the courfe of an unwearied and undaunted exercife 

 of his public funftion, was frequently expofed to the danger 

 of foul and infefted air. Mr. Bayley was highly gratified 

 with its effefts, and not only made conflant ufe of the aro- 

 matic vinegar on the bench, and on his vifits to the prifon, 

 but introduced it to the adoption of feveral of the judges and 

 principal gentlemen at the bar. He alfo firft fuggefted to 

 my father the propriety of benefiting by his difcovery, and 

 was the medium of a connexion with Mr. Bayley, perfumer, 

 in Cockfpur-flreet, London, which has continued to the prc- 

 fent day. 



The aromatic vinegar, like every other article in general 

 demand, has been a frequent fubjeft of imitation. Rut it is 

 not of this that I complain ; for, in confequence of unremit- 

 ting attention, our preparation has maintained a decided fu- 

 periority over ail others, both as to<)uaIity and extent of fale. 

 The oceafion of this appeal to your readers is, that one of 

 thefe imitations has lately been fanftioned by the name of a 

 reipectable phyfician, who, though not exprefsly, yet by im- 

 plication, has conferred on another the credit of that inven- 

 tion, which, in juftice, belongs to my father. (See a letter 

 from Dr. Trotter, phyfician to his majefty's fleet, contained 

 in an advertifement publiflied in the newfpapers by a London 

 <lrutrgift.) 



From the recommendatory letter of Dr. Trotter it is evi. 

 dent that he was ignorant of any prior claim ; and he wn.-. 

 therefore made acquainted by my father, in the moft n fpttf- 

 ful terms, with llie fadts which have already been laid before 

 you. To this letter thedoftor has made no reply, though Ite 

 declared verbally to a medical gentleman, that my lather's 

 preparation had never happened to fall in his way; but that, 

 if It had, he lliould with equal readiaelfi kave given teftimony 



in 



