CIIRONOMETRT. 163 



right to be esteemed the father of the last mentioned 

 escapement, as of the detached. From the copy we have 

 given of his figure, it will be immediately perceived, that 

 the pallet of the original escapement is strait, and shews 

 no marks of the curvature Mr. Reid has thought proper 

 to bestow upon it, previous to his comments upon its 

 shape. 



We think it needless to expatiate more upon this sub- Tf there be any 

 ject. The copy of Thiout's book, which is now before edition of Thi- 



.., , li/r n -t ' ^'^^ *° justify 



US, IS m direct opposition to the account Mr. Reid has Mr Reid's 

 given as an extract from it ; and we cannot but suppose drawing and 

 that the whole edition, which has been in circulation for must be^ac- 

 more that sixty years, contains the same text and figures quitted of mis- 

 without variations. If Mr. Reid, however, can shew a But'The^^^-* 

 copy with the description and figure as given by him, we ments here of- 

 shall willingly acquit him of the charge of misrepresenta- ^^^^ ^^^ *^^^ 

 tiOn ; but, even in that case, we must still insist upon the 

 fairness of our observations, which are warranted by the 

 nature of the case, and called for by the interest we take 

 in the history of Chronometry. 



Mr. Reid seems animated by a violent desire of finding Mr. Reid as* 

 new things in, and deriving extraordinary conclusions compemation*^ 

 from, publications which are generally known. He balance is Har- 

 asserts that the invention of the compensation balance is "*<^"'^* 

 due to Mr. Harrison ; and quotes as a proof the follow- 

 ing passage of a letter from Mr. Mudge to Count de 

 Bruhl: " You will now permit me to speak a word or 

 two, as to the compensation for heat and cold in the ba«. 

 lance. It is the original ipethpd by which Mr. Harrison 

 attempted to correct the error, which, as he was pretty 

 tenacious of his own opinion, he carried into execution 

 contrary to the advice of Mr. Graham, but found by 

 experience that Mr, Graham was right, and was forced tq 

 throw it all away, and to contrive his method of applying 

 it to the balance springs *." 



We have transcribed the whole of the extract given by But Harrison 

 Mr, Reid ; and we now ask, What does Mr. Mudge's did not con> 

 statement prove, even supposing his information perfectly Certainly never 



published it> 



• This passage is in p. 150 of the correspondence published In 

 J 799 by the son of Mr. Mudge. 



y 2 accurate I 



