CONTENTS. 
396.—Mean Height of the Continents above the Surface of 
the Sea; by Baron von Humsotpr: Infusoria, 397.—On the 
Kunker, a Tufaceous Deposit in India; by Capt. Newsotp: 
On some of the Substances which reduce Oxide of Silver and 
precipitate it on Glass in the form of a Metallic Mirror ; by 
Joun StENHOvSE, 398.—New Self-registering Barometer ; 
by Rozsert Bryson: On the Manufacture of Enamelled 
Cast Iron Vessels in Bohemia: The Tagua Nut or Vegetable 
Ivory ; by A. Connett, 400.—Lithographic Stones: On the 
Leaves of the Coffee Tree as a substitute for Tea: Upon 
Anastatic Printing, 401.—On a gigantic bird sculptured on 
the tomb of an officer of the household of Pharaoh; by Mr. 
Bonomt, 403.—On the Heat of the Solar Spots; by Prof. 
Henry: Notice in a letter from London to the Senior Editor, 
405.—Supplement to Prof. Loomis’s Paper, at p. 266, of this 
Number: Burning Well, 406.—Particulars of the fall of Me- 
teorites in the Sandwich Islands, 407. Siac Meteor 
at Fayetteville, N. C., 408. 
