324 THE BOTANISTS OF PHILADELPHIA. 



which was published in the first volume of the '' Memoirs 

 of the Torrey Club." His studies of the ballast plants also 

 deserve notice in speaking of his botanical work. He 

 wrote a very just and feeling biographical sketch of his 

 friend, Charles F. Parker, who had died the previous 

 September.* 



Mr. Martindale also devoted himself to other sciences. 

 Entomology received a share of his attention, and in 1863 

 he was made a corresponding member of the American 

 Entomological Society. He devoted himself to the study of 

 the Lepidoptera, and made a collection which experts in 

 that department have pronounced as one of the finest in 

 America. He interested himself in meteorology, and was 

 one of the observers for the Smithsonian Institute. 



He also investigated the history of his native town 

 (Byberry), and studied his family genealogy. 



It is to be feared that Mr. Martindale over-taxed his 

 strength, and, perhaps, had he shortened his hours of labor 

 he might have been spared to the world for many years 

 longer. Symptoms of failing health led him to resign his 

 position within a week or two before his death, in order 

 that he might be restored by travel. 



Commencing his study of plants at the time that 

 systematic botany alone seemed to engage almost the entire 

 attention of botanists, Mr. Martindale's collections soon 

 secured him an acquaintance with the recognized botanical 

 authorities. 



The herbarium f was commenced in his early man- 

 hood, and its collection and arrangement occupied at least 



* Proceedings of Academy of Natural Sciences, Philadelphia, November, 

 1883. 



f American Journal of Pharmacy, LXVI : 251. May, 1894. 



