OF ARTS AND SCIENCES. 203 



" 0.32 gr. of matter consisted of angular portions of quartz, frag- 

 ments of crystals of magnetic iron-ore, and a flock of silica : no trace 

 of carbon was observed under the microscope. 



" 26.60 grs. was the total loss from the iron. 



" The partly ferruginous solution decomposed by an excess of 

 hydro-sulphuric acid, evaporated and calcined, afforded barely traces 

 of lime and soda, which in every case have been found to result from 

 the solution of this iron. 



" 100 parts of a sample of this iron, therefore, consist of 



Pure iron, ...... 98.87 



Quartz, iron ore, and silicate, . . 1.13 



100700 



" Another sample, more nearly an average, from the centre of the 

 mass, afforded in 100 parts, 



Pure iron, 9S.40 



Quartz crystals, magnetic iron ore, and sili- 

 cate of soda and lime, . . . 1.60 



100.00 



" The little slabs which had been the positive electrodes had not 

 disengaored a bubble of cas, which always occurs when the metals 

 affording alkaline bases are alloyed. They also exhibited in their 

 substance the cavities which had contained the mineral bodies found. 



" I was desirous of making some comparative experiments on a 

 specimen of iron having the characters of native iron, as distinguished 

 from meteoric iron. ^ly friend. Professor B. Silliman, Jr., kindly sup- 

 plied me with two slips from the specimen well known as having 

 been found at Canaan, Conn. He expressed to me at the time a doubt 

 respecting the certainty of this mass being native iron. 



" On subjecting this specimen to analytical trials, it was soon de- 

 termined that it is an alloy, consisting of iron, iron and carbon, and 

 pure graphite. 



" 100 parts afforded 



Pure iron, ...... 93.057 



Carbon, ...... 2.666 



Iron from carbon, .... 1.361 



Graphite, ...... 2.916 



100.000 



