168 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 
are a ready means of carrying such diseases as Brown Rot, Scab, 
Mildew, and the like, and in this way much infected stock is no doubt 
raised. 
But so long as the tree be healthy and free from disease, it matters 
little how it has behaved with regard to actual fruits borne, for such 
variations from the normal characteristics of the original tree of the 
variety are not transmissible, and grown under suitable conditions 
and upon suitable stocks the trees will reproduce the original vigour 
and cropping powers of the variety. 
REFERENCES. 
Hedrick, U. P. — Pedigree Nursery Stock. Cir. 18 New York Agr. Exp. Stn. 
pp. 1-8 ; 1912 ; and Journal of Pomology, vol. i. No. 3, May 1920. 
Crandall, C. S. — -Apple Bud Selection, Apple Seedlings from Selected Trees. 
Bull. 221 Illinois Agr. Exp. Stn., 1918. 
Gardner, V. R. — Bud Selection with special reference to Apple and Strawberry. 
Res. Bull. 39 Missouri Coll. of Agr., 1920. 
Borsey, M. T. — Bud Variation as a Practical Asset in Horticulture. Vol. 46 
Minnesota Horticulturist, 1918. 
Shamel, A. B., Scott, L. B., and Pomeroy, C. S. — Citrus'Fruit Improvement: 
A Study of Bud Variation in the Valencia Orange. Bui. 624, U.S. Dept. of 
Agr., Contrib. from P.B. 1, 1918. 
Bailey, L. H. — Survival of the Unlike, pp. 382-392. New York. 4th edition. 
