THE BOTANISTS OF PHILADELPHIA. 343 



collection of Myxomycetes, presented by his sister, reposes 

 within the Academy of Natural Sciences of Philadelphia. 

 Although he was interested principally in the Myxomy- 

 cetes, he was an earnest student of the lower orders of fungi, 

 and an ardent admirer of everything beautiful in micros- 

 copic nature. 



Dr. Rex was a faithful and tireless worker, and those 

 who came in contact with him as fellow-student and 

 colleague, could not fail to appreciate his genial disposition 

 and his faithfulness in friendship. 



As a professional man his work brought him into all 

 grades of life, and it is especially among the poor and needy 

 that may be found to-day a sincere and heartfelt grief, 

 which constitutes his only rew^ard for many hours of toil. 

 He had been a practitioner in Philadelphia about twenty- 

 five years, and was highly esteemed within the profession. 

 During the Civil War he was an engineer in the United 

 States Navy. 



One sister and four brothers — Miss L. M. Rex, the Rev. 

 Henry L. Rex, ex-Register of Wills ; Walter E. Rex and 

 Alfred C. Rex, all of Philadelphia, and Dr. T. A. Rex, of 

 Pittsburg, survive him. He died suddenly on the morning 

 of February 4, 1895, of heart trouble. 



Bibliography. 



1. "Siphoptychitim Casparyi." — Botanical Gazette, IX-X : 176, 



2. ' ' The Myxomycetes, their Collection and Preservation. ' ' — Botanical 

 Gazette, IX-X : 290. 



3. " Review. Die Pilzthiere oder Schleimpilze, nach dem neuesten 

 Standpunkte hearheitet. Dr. W. Zopf. 



4. ' ' Notes on the Development of Tubulina cylindrica and Allied 

 Species of Myxomycetes." — Botanical Gazette, XV : 315. 



5. "On the Genus Lindbladia."— ^otommZ Gazette, XVI : 201. 



