180 Scientific Intelligence. — Mechanical Philosophy. 



the anterior and posterior chambers of the eye were not replenished, 

 the cornea became sunk and wrinkled, a few bubbles of air penetra- 

 ted the anterior chamber, and the patient had no vision. 



Without yielding to the first melancholy impression, the operator, 

 by a happy presence of mind, conceived the hopes of filling the cav- 

 ity ; he sent immediately for some distilled water, warmed it, placed 

 the patient on his back, and filled the external orbit of the eye with 

 the water, opened the eye lid and raised the flap of the cornea. The 

 water then penetrated into all the accessible cavities, the folds of the 

 cornea disappeared, and its convexity was restored. Having kept 

 the eye shut for some minutes, he then directed the patient to open 

 it, and found it in the most satisfactory condition, the patient distin- 

 guished all the objects presented to him as well as after the most 

 completely successful operation. A slight pain was felt after the in- 

 troduction of the water, which went off in a short time. From that 

 time the eye healed without difficulty, and when opened a week after 

 the operation, it was free from swelling and inflammation ; the cornea 

 was perfectly united, but the pupil was a little obscure, the sight fee- 

 ble, and the patient complained that he did not see so well as imme- 

 diately after the operation. But six days after the bandage was re- 

 moved, the shade of the pupil was much diminished, the sight grew 

 stronger from day to day, and no doubt was entertained that the pa- 

 tient would soon be able to read common print. — Bib. Univ. Oct. 

 1829. 



9. A remarkable Watch. — M. Rebiller has made a watch, all 

 the wheels of which, and every portion of the works are visible from 

 the outside. The case, the bridges, and many of the wheels are of 

 rock crystal, a substance perfectly transparent, and little inferior in 

 hardness to the gems. 



The screws are tapped in the crystal itself, all the holes are sunk 

 in rubies, the piece which forms the escapement is of sapphire ; the 

 balance wheel is of crystal. 



When the difficulty of working in such a substance, on a scale re- 

 quiring so much delicacy as a watch which may be suspended from 

 a lady's neck is duly considered, one can scarcely conceive how the 

 maker could succeed in a work of this nature. It is a bijou of re- 

 markable elegance, and the only one hitherto executed. M. Rebil- 

 ler assures us that it keeps time almost as well as a chronometer, 

 and he attributes this effect to the balance wheel being of crystal, and 



