THE BOTANISTS OF PHILADELPHIA. 343 



collection of Myxomycetes, presented by his sister, reposes 

 within the Academy of Natural Sciences of Philadelpliia. 

 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 reward for many hours of toil. 

 He had been a practitioner in Philadelphia about twenty- 

 five years, and was highly esteemed within the profession. 

 Durino' the Civil War he was an eno-ineer 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. " Siphoptychium Casparyi." — Botanical Gazette, IX-X : 176. 



2. ' ' The ]Myxomycetes, their Collection and Preservation. ' ' — Botan teal 

 Gazette, IX-X : 290. 



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

 Standpunkte Ijearbeitet. Dr. W. Zopf. 



4. "Notes on the Development of Tubulina cyliudrica and Allied 

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



5. "On the Genns Ijindhladia.^'— Botanical Gazette, XVI : 201. 



