AMOS PEASLEE BROWN. vii 



almost entirely the evening meetings at the Academy, and not until 

 1 901 did he again take part to any extent in the scientific activities 

 of the city, except in connection with his duties at the University. 



On May 17 of that year he was chosen a member of the Amer- 

 ican Philosophical Society and at once became interested in its meet- 

 ings, as he had been in those of the Academy ten years before. He 

 served on several of the committees and on January 3, 1908, was 

 elected one of the secretaries, an office which he continued to hold 

 until his death. He was a regular attendant at the meetings, except 

 when prevented by failing health, and was a painstaking, faithful 

 and loyal officer. He joined several other societies, but took no 

 active part in their proceedings. He was elected a member of the 

 American Institute of Mining Engineers on February 24, 1888; a 

 member of the Franklin Institute in April, 1890; a member of the 

 American Association for the Advancement of Science in 1901, and 

 a fellow in 1906; a fellow of the Geological Society of America on 

 December 2y, 1905, and a member of the American Museum of 

 Natural History in December, 191 6. He was also a charter mem- 

 ber of the Pennsylvania Chapter of the Society of the Sigma Xi 

 and a trustee of his old school, the Germantown Academy. 



In August, 1902, he took a cruise along Labrador coast, and 

 camped for several weeks at Dove Point, at the head of Sandwich 

 Bay. He made a valuable collection of the flowering plants of the 

 region for the Academy's herbarium but devoted his attention mainly 

 to geological problems and to a study of the general geology and 

 topography of the country, and the grosser features of the fauna 

 and flora. He had the faculty of storing away such general ob- 

 servations, made on his various trips, and holding them at his com- 

 mand for immediate use in future discussions or comparisons. In 

 1904 he made a reconnaissance of the central Rocky Mountains for 

 the purpose of investigating certain mining properties and in the 

 succeeding years made one or more similar trips to Utah, Nevada 

 and Oregon, continuing on to San Francisco on one occasion, 

 where he investigated with intense interest the efifects of the great 

 earthquake. 



Up to 1900 Amos Brown had published comparatively little. 

 There was an early boyhood paper on the tiger beetles, published 



