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48. "Statistical Information concerning the Production of Fruit in 

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49. " Thermotropic Movements in the Leaves of Rhododendron 

 maximum L. " Proceedings Academy of Nntural Sciences, 1899, 219, with 3 

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

 395, January, 27, 1892. 



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

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52. "Origin of the Potato, Solanum tuberosum." Median' ] s Jluiiilily, 

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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 

 ofrice-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, when 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 



