Intelligence and Miscellaneous Articles, 73 



Mr. Mantell's description of the cliffs at Brighton, (Geology of 

 Sussex, p. 277,) they consist of 



1. Calcareous bed, composed of the ruin of chalk strata with clay, 



&c., fifty to sixty feet thick. 



2. Bed of shingle or pebbles, five to eight feet. 



• 3. Sand, three to four feet, with boulders of granite, porphyry, 

 slate, &c. 

 4. Upper chalk, forming the sea-shore. 



The bone was imbedded in the sand No. 3, lying beneath the 

 shingle bed and upon the chalk. Vast quantities of the teeth of the 

 horse, and a few of a species of ox, and of the elephant (£. primi- 

 genius), have lately been discovered in the calcareous bed. 



_ 



INEQUALITY OF THE DARK SPACE BETWEEN THE BODY OF SA- 

 TURN AND ITS RING. 



Do the observations of Sir W. Herschel on an apparent irregu- 

 larity in the figure of Saturn, (recorded in the Philosophical Transac- 

 tions for 1808, p. 160,) throw any light upon the recent observa- 

 tions of MM. Schwabe and Harding, and of Messrs. Herschel and 

 South, on the apparent inequality of the dark space between the 

 body of this planet and its ring, as noticed in No. 12 of the Monthly 

 Notices of the Astronomical Society, which has just been circulated ? 



Inquirer. 



NATIVE IRON f SLIGHTLY ARSENIURETTED. 



The substance described below, was brought to me two or three 

 weeks since, by Mr. Philo Baldwin* , who stated that it was from 

 Bedford county, Pennsylvania, in which county we believe Mr. B. 

 lives. 



Perceiving that it was a singular modification of iron, and different 

 from any thing I was acquainted with, — it was, at my request, sub- 

 mitted by Mr. S. to chemical examination. 



My impressions are, that it is a new variety of native iron, and 

 that it differs from that substance only by containing a little arsenic, 

 with a little plumbago. Measures will be taken to obtain a greater 

 supply, as it is stated to be abundant, and will at least form an inter- 

 esting addition to our cabinets. 



Chemical examination* — The fragment weighed, I should judge, 

 two or three ounces j and although it had sustained considerable in- 

 jury, it evidently formed a distinct crystal. By observing a symme- 

 trical modification which this crystal had undergone, in the truncation 

 of two of its alternate obtuse solid angles, I was able easily to ascer- 

 tain, that it belonged to the class of rhombic prisms, but whether 

 the prism was right or oblique, I could not determine The natural 

 planes were not sufficiently even, to allow of the determination of 



* Mr. Baldwin went to Newtown, Connecticut, where he formerly re- 

 sided, and was to return in a week to learn the nature of the mineral, but 

 has not yet called, which prevents me from stating the exact locality. — B. S. 



New Series. Vol. 4. No. 19. July 1828. L their 



