3 Id Experiments on Thought, 



9,ble craniologists, with all their measurements of the heads of 

 murderers, are likely to become. 



Zminis. 

 London, 20 Oct. 1827. 



Postscript. — :I find that some similar remarks have been 

 made by the late Sir William Watson, in his Treatise on Time. 

 He estimated, from some experiments made in company with 

 his friend Herschel, the greatest possible velocity of sensation, 

 such as to admit of about three hundred distinct impressions 

 on the eye or the ear in a second. " It is true," he observes, 

 ♦^ that whoever attends to what passes in his imagination on 

 particular occasions, will be struck at the apparent rapidity 

 with which ideas appear to flow at times, and will be apt to 

 suspect them far to exceed sensation in that respect. But it 

 is probable that we are ourselves deceived in such cases/' 

 P. 38. But there are no direct experiments to prove this 

 opinion. On the other hand, a sound may be continuous, and 

 yet consist of only about twenty vibrations, or still fewer, in a 

 second. 



' — ^ .. ^^T. ' .VWJ ' m- ->i.Mi-.>l*Mi4-^ ' -^ — -— - — "< ■ • '-- ■■-' 



HiEj^OGLYPHiCALf Fragments, illustrative of Jnscriptions pre- 

 served in the British Museum, with some remarks on 

 Mr. Champollion's opinions. In a Letter to the Cavaliere 



■: ,rgAN QuiNTiNO. By a Correspondent. 



My dear Sir, 



You will be glad to hear that I have made some little 

 progress in the study of the Enchorial inscriptions which I had 

 lately the pleasure of showing you : my steps have, as usual, 

 jjeen guided by no system whatever : they have been wholly 

 empirical, and though very slow, I trust they are so much the 

 more sure : and I hope they will at least serve as an excuse 

 for my reminding you of the expectations you kindly allowed 

 me to entertain, that you would send me copies of any thing 

 of the kind that you might find among the objects entrusted to 

 your care at Turin. What I have lately done has only been 

 to ascertain the dates of many of the tablets sent by Mr. Salt 



