=1.= _Ga. Hort. Soc. Rpt._ 53, 99. 1889. =2.= _U. S. D. A. Rpt._ 392. 1891. =3.= Wickson _Cal. Fruits_ 360. 1891. =4.= _Cornell Sta. Bul._ =106=:46, 63. 1896. =5.= _Ala. Col. Sta. Bul._ =85=:445. 1897. =6.= _Am. Pom. Soc. Cat._ 26. 1897. =7.= _Am. Gard._ =19=:75, 132, 220, 792. 1898. =8.= _Mich. Sta. Bul._ =169=:242, 249. 1899. =9.= _Cornell Sta. Bul._ =175=:143. 1899. =10.= Waugh _Plum Cult._ 134. 1901. =11.= _W. N. Y. Hort. Soc. Rpt._ 88. 1902. =12.= _Can. Hort._ =25=:272. 1902. =13.= Budd-Hansen _Am. Hort. Man._ 308. 1903. =14.= _Ga. Sta. Bul._ =68=:11, 28. 1905. =15.= _Ohio Sta. Bul._ =162=:256. 1905. =16.= DeVries _Plant Breeding_ 170. 1907. _Persing Nos. 1 & 2_, 15. _Russian plum 20M._ 4. Wassu 4. _Wassu_ 9. Probably Abundance holds first place among the Triflora plums in New York but Burbank is a close second and in many localities has first preference. Abundance is in the lead chiefly because the trees of this variety are larger and better formed and bear more fruit than those of Burbank. To offset the advantages of Abundance the fruit of Burbank is of better quality, more handsomely colored, keeps and ships better and is less susceptible to brown-rot. The fruit of Burbank ripens a week or more later than that of Abundance, which in most seasons is a slight advantage for the first-named variety. The trees of this plum are distinguished from those of all other plums by their low, spreading habit, flat top and somewhat drooping branches, characters which make them more or less difficult to handle in the orchard and very difficult to manage in the nursery. The wood of Burbank is brittle, true of all Trifloras, but a serious defect in this one. In common with other varieties of its species, Burbank is less troubled with curculio and black-knot than the European plums. The fruit of this variety begins to color some days before ripe and should be picked before fully matured if it is to be kept or shipped. Usually the best specimens of Burbank come from thinned trees and thinning is a necessary operation in all commercial orchards. The variety does not thrive in the South, being poor in quality and rotting badly. In New York, Burbank is not being planted nearly so largely as a few years ago, the Domesticas being much more profitable than this or other Triflora plums. It is a very desirable variety for home plantations in New York.