RECENT .innrnoxs to meteorites 243 



Iron 88.687% 



Nirk-l 10.547% 



Cobalt 0.546% 



Chron.iuiu 0.018% 



Maiitranese ....... none 



Ca:h()n 0.025% 



Silicon ........ none 



Sulpluir 0.016% 



Phosphorus 0.020% 



'I'otal ^99.859%" 



Specific gravity, 7.039. 



This analysis shows that the Guft'ey meteorite contains rather more 

 than the average percentage of nickel and cobalt and unusually low 

 percentages of carbon, sulphur and phosphorus. The extremely small 

 amount of sulphur found indicates the practical absence from the mass 

 of troilite, the protosulphide of iron which is found only in meteorites. 

 This inference is substantiated by the few particles of this mineral which 

 are to be seen on careful examination of the surface. The low content of 

 phosphorus nn'ght have been inferred from the practical absence of 

 schreibersite (a phosphide of nickel and iron characteristic of meteorites) 

 as shown by the polished and etched specimen, this mineral being the 

 substance that usually brings the Widmanstatten lines out in relief. 



Edmund Otis Hovey. 



RECENT ADDITIONS TO THE METEORITES IN THE FOYER. 



DURING the past summer three important accessions were 

 installed among the meteorites in the Foyer. They were 

 (1) the newly discovered iron known as Guffey which is de- 

 scribed elsewhere in this issue of the Joukxal, (2) a slice and cast of the 

 iron meteorite called Gibeon and (3) the largest known portion, weighing 

 20 pounds 3 ounces, of the stone meteorite Modoc. 



The manner of installing the Gibeon section is a new departure in 

 the mounting of meteorites, as far as we kno\\. About two years ago 

 we received through exchange with the Natural History Museum of 

 Hamburg, (iermany, a plaster cast of the larger of the two known por- 



