THE BOTANISTS OF PHILADELPHIA. 399 



47. ' * Water Storage and Conduction in Senecio praecox from Mexico. ' ' 

 — Contrib. Bot. Lab. University of Pennsylvania., II: 31. 



48. ''Statistical Information concerning the Production of Fruit in 

 Certain Plants. — Contrib. Bot. Lab. University of Pennsylvania, II : 100. 



49. * ' Thermotropic Movements in the Leaves of Rhododendron 

 maximum L." — Proceedings Academy of Natural Sciences, 1899, 219, v^ith 3 

 figures in text. 



50. "Local Plant Names in New Jersey." — Garden and Forest, V: 

 395, January, 27, 1892. 



51. "Transmitted Characteristics in a "White Angora Cat." — Science, 

 N. S., IX : 554, April 14, 1899. 



52. "Origin of the Potato, Solanum tuberosum." — Meehan^s Monthly y 

 IX : 111, July, 1899. 



ALEXANDER MACELWEE. 



Alexander MacElwee was born in Glasgow, Scotland, 

 January 28, 1869, — the first of a family that now numbers 

 eleven. At an early age he was sent to one of the primary 

 schools of his native city ; thence to the public schools, 

 where he received a good elementary education. At the 

 age of twelve, he passed the highest standard with honors, 

 and then went to work. His first experience was as an 

 office-boy in a commission agent's office at a salary of three 

 shillings per week. He remained here nearly a year, and 

 then left for a better position in a wholesale drug ware- 

 house. Here Mr. MacElwee helped to mix up compounds, 

 bottle flavoring stuffs, and run errands. He remained here 

 until October, 1883, w^hen he left Glasgow to join his parents 

 in the New World. He arrived in Philadelphia October 16, 

 1883, and shortly afterwards secured a position as gardener's 

 boy in the garden of A. J. Drexel, at Thirty-ninth and Wal- 

 nut Streets. At this time he knew absolutely nothing 

 about plants ; and so, shortly after, he conceived the idea of 

 studying botany. During the year 1886, he first attended 



