Plate 21. 



T. W. COWAN, F. G. S., F. R. M. 8. 



Editor of the "British Bee Joiirmil." 



Author of "The British Bee-Kce]>er's Ouidc Boofe" and of "The 



Honey-Bee" 



This writer is mentioned pages 12, 146, 195, 239, 356, 469, 479, 480, 



48 L, 487. 



