INDEX TO ILLUSTRATIONS. xi 



FACING PAGE 



OULLINS 304 



Pacific 306 



Pearl 310 



Peters 312 



Pond 314 



Pottawattamie 316 



PrUNUS AMERICANA, BLOSSOMS OF 56 



PrUNUS AMERICANA, BaRK OF 6 



Pr UN US CERASIFERA, BLOSSOMS OF 46 



Pr UN US CERASIFERA, BARK OF 6 



Prunus domestica, Blossoms of 12 



Pr UN us domestica, Bark of 6 



Prunus hortulana. Blossoms of 64 



Prunus hortulana, Bark of 6 



Prunus hortulana mineri. Blossoms of 68 



Pr UN us HORT ULA NA MINERI, BaRK OF 6 



Pr UN us INSITITIA, Blossoms of 34 



Pr UN us INSITITIA, Bark of 6 



Prunus munsoniana. Blossoms of 88 



Prunus munsoniana. Bark of 6 



Pr UN us NIGRA, Blossoms of 70 



Pr UN us NIGRA, Bark of 6 



Prunus tri flora, Blossoms of 50 



Pr UN us TRIFLORA, BARK OF 6 



Quackenboss 320 



Robinson 33° 



Satsuma 338 



Shipper 342 



Shiro 344 



Shropshire 344 



Smith Orleans 34^ 



Spaulding 350 



Sugar 354 



