360 G. P. Merrill— New Stony Meteorite. 



presumably also a portion of the irresolvable matter of the 

 chondrules. A like condition of affairs was noted by JBorg- 

 strom in his description of the Shelburne meteorite,* which, 

 from a chemical standpoint, this closely resembles. 



The specific gravity of the Modoc stone was determined on 

 two complete individuals, weighing 1110 and 490 grams, respec- 

 tively, by a large apparatus constructed on the plan of the 

 beam balance recommended b} 7 Penfield in the latest edition 

 of his Brush Determinative Mineralogy. No attempt was 

 made to exhaust the air from the pores, the stone being 

 immersed in water and, with frequent agitations, allowed to 

 remain until no more bubbles were given off. The average 

 of two determinations was 3'54. 



Addenda. 



Together with the samples of Modoc meteorite forwarded, 

 Mr. Freed included two small pebble-like masses, which had 

 been found by his boy and which it was thought might pos- 

 sibly be. also of meteoric origin. One of these was of ferru- 

 ginous quartzite. The other, some 40 by 60 millimeters in 

 greatest diameter, and weighing 135 grams, proved to be 

 meteoric. This, although weathered to a dull rusty brown on 

 the surface, still showed distinctly the usual pittings, and on a 

 polished surface presented a dull dark-gray ground thickly 

 spotted with small points of metallic iron and occasional 

 rounded areas recognized with the unaided eye as chondrules. 

 Under the microscope this is found to consist of an extremely 

 fine tufaceous ground carrying large clear olivines in single 

 crystals and scattered aggregates and numerous chondrules of 

 both olivine and enstatite. The olivine chondrules are in part 

 polysomatic and in part of the common barred or grate-like 

 character. The enstatite chondrules are most commonly in 

 radiate forms. The entire structure and even the identity of 

 some of the mineral constituents are much obscured by iron 

 oxides which have stained the mass an ocherous red throughout. 

 The metallic constituents are much more abundant than in the 

 Modoc stone named above. 



Although differing somewhat from Washington's description 

 and my own studies on the meteorite of Jerome in the adjoin- 

 ing county of Gove, the differences are so slight as to be 

 seemingly non-essential, and T am inclined to regard this as a 

 straggler from the Jerome fall, which, it will be remembered, 

 was found on April 10, 1894, on the Smoky Hill River and 

 has been described in detail by Dr. Washington, in this Jour- 

 nal for June, 1898, vol. v, p. 447. There is, however, a 

 chance for a difference of opinion on this subject. 



* Trans. Eoyal Soc. of Canada, 1904. 



