The Sampson tangelo resulted from a cross in which pollen of the Dancy tangerine was used to pollinate an ordinary grapefruit. The grapefruit so cross-pollinated contained a large number of seeds, 76 in all, which gave a total of 106 seedlings (several seeds sending out more than one sprout), and these seedlings were serially numbered from 1310 to 1415. With the exception of the Sampson tangelo (C. P. B. 1316), most of the seedlings appeared to be false hybrids or ordinary grapefruit ; however, a number of them were, distributed to cooperators to be tested for possible hybrid character. Several seedlings were sent to H. S. Williams, of Rockledge, Fla., about 1900, only one of which proved to be a hybrid (C. P. B. 1397). Thus this fruit is a sister hybrid of the Sampson tangelo (C. P. B.1316), though of quite different character. However, trees under this number that fruited at Little River and Mount Dora, Fla., produced fruit identical with that of C. P. B. 1397. No propagation of C. P. B. 1397 appears to have been made at Rockledge, but E. S. Williams, son of H. S. Williams, took bud wood later to Fort Pierce, Fla., where he propagated the variety' and set out a grove of several acres. The fruit was found profitable for use in supplying some of the tourist hotels on the east coast and in filling private orders. In the region where grown it is commonly called the Williams tangelo, and that name is herein adopted. Fruit of the size, shape, and general appearance of grapefruit, though decidedly flattened, deeply depressed at blossom end, with less marked depression surrounding calyx, from which radiate shallow grooves ; transverse diameter of fruit 3 3/4 to 4 inches, vertical diameter 2 7/8 to 3 inches; color, grapefruit yellow slightly tinged with orange (Ridgway, cadmium yellow) ; rind of medium thickness (one-eighth to three-sixteenths inch), fairly free peeling, smooth and glossy, oil cells very small and numerous, slightly indented ; segments numerous, 13 to 15, regular, with rather large open core, separating easily like a tangerine ; seeds varying from 10 to 15, white in cross section, resembling grapefruit seeds ; pulp of melting quality, very tender and juicy, with little rag, of amber color (Ridgway, primuline yellow), flavor mildly subacid and of pleasing quality when ripe, lacking the bitterness of grapefruit but not insipid. Tree evergreen, thrifty and productive, of general habit of grapefruit: leaves unifoliate, resembling rather large orange leaves, petiole wings variable. The season of this tangelo in Florida is from late January to March, slightly earlier than the Sampson. Its shape and rind character make it a good shipping fruit, though it shows a tendency to dry out if held on the trees past full maturity. In its general resemblance to a small or medium-sized grapefruit it lacks the distinctive character of the other tangelos that have been selected for propagation, but possesses sufficient merit to warrant its inclusion in collections of citrus fruits for the home fruit garden or local markets.