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XIII. Delected IwJjOiilion. 

 To J^Ir. TUloch. 



S I R Cambridge, Feb. 22, 1 907. 



WRITE to inform vou that a letter* signed by a person 

 calling himself ^\^. Peel is an imposture, 'ihe author of this 

 low piece of witticism pretends to the title of chemist ; but 

 I recommend to him to consider that the first qualitication 

 for an interpreter of nature is the love of truth. Let him 

 be detected in committing a second fraud in the republic of 

 letters, and I shall send you his name. 



Yours, Sec. Chem. 



XIV. On Mr. A. G'. Eckhardt's Regulator for powerful 

 Machinery ; and on the Application of the L(il'(/i/r of Ani- 

 mals as a moving Potfcr on ihe Outside of a JValkins^-wiiccl. 



To Mr. Tilloch. 



Jn the second volume of the Repertorv of Arts, p. 3fJl, in 

 the specification of A. G. P^ckhardt's patent of ihe 3 1st of 

 January 1705, a fly or regulator for powerful machinery is 

 described, consisting of an upright revolvin<r sliaft, having 



* Two letters from W. Peel have been publislied in this work : one ia 

 voL xxi. p. 'i"9; tlie other in vol. xxii. p. 152. It is ii-npossible, in condactiiifj 

 a..work dedicated to the service of truth, and open for the comniuuications of 

 men of science, to guard against impositions authenticated by a false signa- 

 ture. To myself the injury might have been very scrions; but this is a trifle 

 compared with the mischief done to the public. Thjse meritorious indivi- 

 duals, who, pursuing Nature through her iabyrinilis, spare no por^^onal Inbours 

 to enlighten others, by such frauds as this are put into a wrong- path, and 

 robbed of what in their estimation is more valuable bv far than monev — their 

 precious time. It is impossible even to conceive a motive for such unprinci- 

 pled malignity; nor will any man of feeling and integrity envy the wretch 

 who is guilty of it the gratification he may experic;uc from ths ttrnporarj' 

 imposition practised against those who never did him an injury. I am much 

 tibliged to the individual who has enabled me to comniu.nicate the above in- 

 formation to the public; and I believe I niav add, in however trivial a light 

 my own poor but well-meant efforts may be held by men of science in gene- 

 ral, that he would be rendering them a real service by euabling mc to expose 

 li)€ author oi tlus low but mijchievou* Iri^ k. — A T. 



vanes 



