104 Mr. G. Chilton’s Analisis of the Maryland Aérolite. 
over their heads. There was no fire-ball seen by me or others 
that I have heard. There was but one report, and but one 
stone fell, to my knowledge, and there was no peculiar smell 
in the air. It fell on my plantation, within 250 yards of my 
house, and within 100 of the habitation of the negroes. 
I have given this statement to Dr. Carver, at his request, 
and which is as full as I could give at this distant day, from 
haying thought but little of it since. Given this 28th day of 
April 1825. W.D. Harrison, 
Surveyor of the port of Nanjemoy, Maryland. 
XVII. Analysis of the Maryland Aérolite. By GrorcE 
Cuitton, Lecturer on Chemistry, &c.* 
PuE piece of Maryland aérolite+ subjected to examination, 
weighed 228-30 grains in air, and lost 62°25 grains by im- 
mersion in water, at 60° temperature. Its specific gravity is 
therefore 3°66. The external crust was taken off, and the re- 
mainder powdered, not very finely, and separated into two 
parts by the magnet; 40 grains were obedient to the magnet, 
25 of which were taken for examination. ‘The same quantity 
was taken of the unmagnetical portion. 
Examination of the unmagnetical Portion of the Maryland 
Aérolite. 
Process 1.—The 25 grains were digested in dilute nitric 
acid; an undissolved part floated, which, together with the 
solution, was decanted from a heavier part, which remained 
at the bottom of the flask. To this last, muriatic acid was 
added, and digestion continued till every thing soluble was 
taken up. ‘The two insoluble parts, managed in the usual 
way and carefully dried, weighed 15°87 grains. During ex- 
posure to a red heat, in a crucible, sulphur burnt off with its 
usual blue flame, and left siliceous earth which weighed 146 
grains. 
Process 2.—The acid solutions were mixed together and 
evaporated slowly to dryness; during which, portions of mat- 
ter fell down, which, together with a portion left after treating 
the dry mass with water, weighed 0:7 gr. at the common tem- 
perature. On further examination they proved to be silica 
and oxide of iron. By estimation, 0°3 silica, and 0:2 oxide of 
iron, in the perfectly dried state. 
* From Silliman’s Journal, vol. x. p. 13). 
+ A notice of the fall of this aérolite was published in our last number : 
{see the preceding article—Ep.] For a more particular description of the 
stone, and for illustrative remarks respecting it, see the end of this paper. 
—-Amer. Epir. 
Process 
