286 THE BOTANISTS OF PHILADELPHIA. 



Dr. George Engelmann, of St. Louis, and Dr. C. C. Parry, of 

 Davenport, Iowa, as well as the critical and valued assist- 

 ance of the late Dr. Asa Gray, of Cambridge, and Dr. Max- 

 well T. Masters, of London, England. Without such effi- 

 cient aid it would have been practically impossible for him 

 to publish his unpretentious little work on the " Cone- 

 bearing Plants of the World," which was issued in 1868, 

 and dedicated to his life-long friend and preceptor, Dr. 

 William Darlington.* 



In April, 1866, he was elected a member of the Academy 

 of Natural Sciences of Philadelphia, at a period when 

 the only active botanists connected therewith, numbered 

 but three or four. Although business cares and distance 

 from the city prevented him from taking an active part in 

 assisting to re-arrange the extensive herbarium belonging 

 to the institution, nevertheless, his deep interest in the 

 work prompted him to render his assistance whenever 

 available, and the large and valuable collection of cones 

 belonging to the Academy is almost exclusively owing to 

 his own individual exertions. At a time when the flora of 

 the western states and territories was but imperfectly under- 

 stood, he, in company with congenial botanical friends, 

 made extensive collections in Colorado, Kansas, Nebraska, 

 as well as on the Pacific coast, which resulted in a volum- 

 inous herbarium, now in charge of an institution of learning 

 where the younger generation of students may reap the 

 benefit of his life-work in the field of botanical science. 

 The subject of this sketch has written but^ few strictly 

 scientific papers for publication, as the aim of his life has 



* The Book of Evergreens. A Practical Treatise on the Coni/erce, or Cone- 

 Bearing Plants. By Josiah Hoopes. Illustrated. New York, Orange, Judd & Com- 

 pany. Octavo, pp. vi, 435. 



I 



