1890.] NEW YORK ACADEMY OF SCIENCES. 189 



succeeded in finding them and bringing them to the new town 

 of Greensburg about a year later. The 5o-pound mass was car- 

 ried over by a neighbor, who used it to weight down his haystack. 



Prof. Snow, of Lawrence, Kansas, visited Kiowa County sev- 

 eral times, and the last time obtained the lOl.o-pound mass in 

 the streets of Greensburg, the county seat, where it had lain for 

 several years in front of a lawyer's real-estate oflBce. 



The exterior of all the masses shows the characteristic pitting. 

 The surfaces have all been more or less oxidized by exposure to 

 the elements, showing that the fall is not recent, and that the 

 original mass was made of crystalline iron as well as of iron filled 

 with crystals of olivine; in other words, the masses show two 

 distinct groups. Of these, the 345-pound and the 75-pound 

 ones are nickeliferous iron of a highly octahedral structure and 

 cleavage, and are caillites; while the others are meteoric iron 

 containing olivine, and belong to the group known as pallasites. 



The largest mass, a pallasite, weighs 466 pounds, or 211.818 

 kilos. It is thick, slightly flattened, triangular in form, some- 

 what heart-shaped, and measures through the longest part 

 61 cm., or 24^ inches; across the widest part, 48 cm., or 19 

 inches; and in the thickest part, 37 cm., or 14|- inches. It is 

 covered with large indentations measuring 10x6x3 cm. The 

 coating is more or less oxidized, but the olivine is perceptible in 

 all parts of the mass. 



The dimensions of the 34o-pound mass (156.818 kilos) are 

 60x37x29 cm., or 23fxl4|xll| inches. It is slightly arch- 

 shaped, is an iron with many pittings, and shows the charac- 

 teristic magnetic oxide of iron crust. 



The 219-pound mass (99.535 kilos) measures 51x41x26 cm. 

 (20^x16^x10^ inches), in form like a three-sided pyramid. 



The 211-pound mass (95.909 kilos) is somewhat rounded, 

 with a circular depression on one side. 



There are two masses weighing 125 pounds (58.863 kilos) and 

 54.96 pounds (25.084 kilos) respectively. 



The 101.5-pound mass (46.136 kilos) is almost round, mea- 

 suring 35x26x27 cm. (13fxl0|xl0| inches). The exterior is 

 evenly pitted, and the. centre of each pitting is occupied by an 

 olivine crystal. 



The 75-pound one (34,09 kilos) is an iron, and measures 

 32x224-xl5 cm. (12^x8^x5| inches), in shape like a pear or ham, 

 covered with pittings. The crust has been changed somewhat 

 by weathering. 



The 71,5-pound mass (32.485 kilos) measures 27x23x22 cm. 

 (10-J^x9x8|- inches). It is a jagged, irregular square, and shows 

 olivine crystals all over the exterior. 



The 60-pound mass (27.272 kilos) measures 36x21x17 cm. 



