MEMOIR OF SAMUEL LEWIS PENFIELD 577 



led him to advocate the application of stereographic projection to geo- 

 graphical map making and to demonstrate the advantages to be derived 

 from its use. 



He did not confine his investigations and experiments to his laboratory, 

 but broadened his horizon by working in the field, spending two summers 

 in the Yellowstone National Park as an assistant on the United States 

 Geological Survey, and other summers in New York state. North Caro- 

 lina, and Colorado, as well as in various parts of Europe, visiting at 

 the same time the most celebrated mineral collections and becoming 

 acquainted with foreign mineralogists. 



The high quality of his work and the value of his contributions to the 

 science of mineralogy are attested by the esteem in which he was held 

 both abroad and in his own country, as well as by the honors bestowed 

 upon him. Beginning with the year 1893, these rapidly succeeded one 

 another in the following order: Associate Fellow of the American 

 Academy of Arts and Sciences in Boston; in 1896, Foreign Correspondent 

 of the Geological Society of London, Master of Arts in Yale University; 

 in 1900, Member of the National Academy of Sciences; in 1902, Fellow 

 of the American Association for the Advancement of Science, Corre- 

 sponding Member of the Eoyal Society of Sciences at Gottingen, Member 

 of the Scientific Society of Christiania; in 1903, Corresponding Member 

 of the Geological Society of Stockholm and Foreign Member of the 

 Mineralogical Society of Great Britain. In 1904 he received the honorary 

 degree of Doctor of Laws from the University of Wisconsin. He was a 

 member of the Connecticut Academy of Sciences and a fellow of the 

 Geological Society of America. 



These honors he accepted with such charming modesty that many of 

 them remained hidden and unsuspected by even those most intimate with 

 him. His achievements followed as the natural results of his ceaseless 

 activities, which sprang from a love of research for its own sake. 



For twenty years after his graduation he remained unmarried, devoting 

 his time, thought, and energy to his scientific work. During the greater 

 part of these years he lived with a small company of bachelor colleagues 

 in the attic of Sheffield Hall, familiarly known as "Old Sheff" ; here his 

 genial and generous nature won him the admiration and affection of his 

 associates and friends. In these homely halls, low-roofed and bare, there 

 grew up a group of men who seem to have acquired from their surround- 

 ings certain sturdy qualities which are to be reckoned among their 

 fortunate characteristics. 



In 1897 Professor Penfield married Miss Grace Chapman, of Albany, 

 who brought lo liim great happiness, and whose devotion to him through 



