1835.] Lymph, Blood, and Chyle. 433 



18 grs. of dry fibrine ; and 39*45 grs. of the same blood 

 yielded 6*41 grs. of dry red coagulum, which affords a per 

 centage of 16*248 of dry red coagulum, the latter containing 

 0*496 fibrine. 



(To be continued.) 



Article IV. 



Experiments and Observations on Visible Vibration. 



By Charles Tomlinson, Esq. 



( Continued from p. 367. ) 



Note. — The following paragraph, which seems to have been 

 passed over in copying, should have been inserted in the 

 preceding paper at p. 363. 



16. If two unisonant glasses containing mercury be 

 employed, a faint impression of the undulae can be observed 

 in the second glass while vibrating the first. So also if the 

 circumference of the mercury in the second glass be sur- 

 rounded with shot, the vibration of the first glass will set 

 the shot in motion. If the vibration of the first glass be 

 suddenly interrupted by placing the hand upon it the second 

 glass will continue to yield the same note, and the shot will 

 vibrate for some seconds, in accordance as it were, with the 

 fundamental note. 



47. There is, perhaps, no music more sweet, or any that 

 appeals more perfectly to the feelings than that produced 

 by musical glasses. In the course of these experiments 

 I had accumulated a great number of glasses, and it oc- 

 curred to me that a set might be easily and cheaply arranged. 

 Out of about thirty glasses that I had by me, I only met 

 with five that answered my purpose : three soda water 

 glasses, yielding the notes B flat, D and E within the stave, 

 and two smaller ones yielding the notes G and A in alt. I 

 accordingly sent for glasses at different times, to the amount 

 of about a hundred, or a hundred and fifty. I ranged about 

 a dozen at a time on a smooth mahogany table, and sounded 

 the notes required on a flute, resting the end on the table, so 

 that any of the glasses in accordance with the note sounded 

 sympathetically ; if none accorded all were silent. By this 

 means I became not only sure of a perfect instrument, but 



vol. i. 2 F 



