MERRILL: PLATINUM IN METEORIC IRONS 597 



Until such time as the Guiana and Brazihan forms shall be 

 considered as_constituting two distinct species, the scientific 

 name of kidney cotton should be Gossypium lapideum Tussac. 



PETROGRAPHY. — Platinum in meteoric irons: a correction. 



Through a misreading of Dr. Mingaye's notes it was stated 

 in the issue of this Journai^ for June 4 last,^ with reference 

 to the Yenberrie iron: "This is the first reported case of platinum 

 in an AustraHan meteorite." As a matter of fact platinum 

 has become one of the well-recognized constituents of meteorites 

 and has been detected by Dr. Mingaye himself in those of Bar- 

 rata, Cowra, Delgate, Gilgoin, Molong, and Mount Dyrring. 



Geo. p. Merrill. 



' This Journal, 10: 315. 1920. Note a to Table I. 



