Ione RGR aes nl. ane Os Ree he 
Miscellaneous Intelligence. 447 
find in the Journal of the Franklin Institute of Philadelphia, for March 
;. V. Marsh of that city, 
iving an extensive series of observations which he has collected, together 
with his deductions therefrom. 
eteor was seen in full sunshine, as a large ball of fire, from 
Salem, Mass., to Petersburg, Va. Its path was probably intlined to 
the vertical about 35°, and the direction of its motion was nearly west. 
Its velocity was very great, perhaps full 30 miles per second, and the 
meteor appears to have become luminous when more than 100 miles 
- Y. MISCELLANEOUS SCIENTIFIC INTELLIGENCE. 
1. Probable Origin of Flint Nodules in Chalk.—Dr. G. C. Watutcn, 
i d (in the Quart. Jour. Micro- 
Salpae the siliceous shields of Diatomacee, &c., are freed of all or nearly 
all their soft portions, and these minute organisms aggregate into masses 
selves there as nodules similar to, certainly, if not identical with, 
the flint nodules in the Chalk. 
