White.] 72 [November?, 



rado. It was a fragment of one found by Mr. Arlsa on Bear 

 River, nine miles southwest from Golden City, Colorado. 



This meteoric iron had a crust on one side of the specimen which 

 consists of protosulphide of iron. It was originally a bi-sulphide, but 

 was decomposed by the fire used in heating it, for the purjwse of 

 cutting off a piece, by the people in Colorado. 



Specific Gravity of the clean metal 7.692 



COMPOSITION. 



Metallic Iron 90.650 



" Nickel 7.867 



" Tin 0.020 



" Cobalt 0.010 



Schrelbersite or Iron Phosphorus and ) n oKn 



a little Nickel and Cobalt. Insoluble, j ^'^^^ 



99.497 

 On a polished section of the metallic mass, diluted nitric acid brings 



out very sharp and well-defined Widmannstiitian figures, in the forms 



of nearly equilateral triangles. 



The mass was cut from an immense meteorite, said to be two feet in 



diameter. It is noticed by Prof. C. U. Shepard in the last September 



number of the American Journal of Science, but no analysis was 



given. 



Prof Shepard has purchased this meteorite, and daily expects to 



receive it. 



Dr. J. C. "White illustrated by drawings upon the black- 

 board some remarks upon an Entozoon or parasitic worm 

 found in the human intestines, and called Ancylostomum 

 duodenale. 



The worm belongs to the nematoid or round worms sueh as Tri- 

 china and others, and is somewhat allied to Strongi/lus, having been 

 formerly described as one. It was first found in Milan in 1838, and 

 afterwards in Egypt, where a peculiar and grave form of anojmia had 

 long prevailed, which affected one-fourth of the population, and was 

 called Egyptian chlorosis ; but its nature and cause remained unknown 

 till 1852, when Griesinger in his travels made a post-mortem exami- 

 nation of one of these fatal cases at Cairo, and found the jejunum and 

 duodenum filled with fresh blood, and thousands of these little worms 

 attached to the mucous membrane and filled with blood. A form 

 of anoemia, with symptoms similar to those produced in Egypt, has 

 long been prevalent in Brazil, but till within a year it was not known 

 that this Entozoon was the cause of it, when Dr. Wucherer of Bahia 

 discovered them in the jejunum of a human subject and verified his 



