Jackson.] 412 [Hay 18, 



denied that this bird builds its nest where the Tillandsia 

 grows. 



Mr. W. T. Brigham exhibited photographs of two meteor- 

 ites from Tucson, Arizona ; the extreme diameters of the 

 larger one were 49 by 39 inches. It had a central opening, 

 being formed like an irregular ring, and weighed 1600 

 pounds; the smaller one, which was solid, measured 49 by 18 

 inches. They were found in sand. 



Dr. C. T. Jackson called attention to the fact that no 

 meteorites had been found below the modern surface. 

 Though when exposed to moisture they might be dissolved 

 and disappear from the deeper strata, yet in many substances, 

 as in clay and mud, impervious to aerated water, they would 

 be preserved ; and he inferred from this that the fall of 

 meteorites was of comparatively recent occurrence, viz., since 

 the Tertiary Strata were deposited. Some meteorites are 

 characterized as stony, others as metallic; yet metals, as 

 cobalt, iron, nickel, entered into the composition of all. 



It was interesting, he said, to note that the examination of 

 meteorites disclosed no materials which were not common 

 to the globe. New combinations, however, had been dis- 

 covered. Iron, phosphorus and nickel had no where else 

 been found combined. 



A large meteoric mass fell in Bavaria which cut and pol- 

 ished like steel. Another mass, weighing 3000 pounds, was 

 found on the bank of the Red River, which is now preserved 

 in New Haven. A fall of red hot stones attended by fre- 

 quent explosions occurred in India. One of these stones 

 was sent to this Society. On the surface, this specimen was 

 fused to glass. These stones were intensely cold to the 

 touch. 



Dr. Jackson, in his closing remarks, expressed regret that 

 the Society possessed no collection of meteorites. 



