Nutshell thickness varied somewhat. In all but 2 cases, the nuts were too hard to crack with the teeth. The thin-shelled ones are _comparatively_ thin only, being about like paper-shelled pecans with the shell thinnest on the sides of the nut. It is not suggested that these two thin-shelled nuts be exploited as paper-shelled shagbarks since they are poorly formed nuts and of small size. One of the two trees might be a hybrid since it does not have a ciliate leaflet margin although the buds, bark and leaves are typical of shagbark hickory. The minimum shell thickness observed for the side of the nut was 1/2 a millimeter (0.5 mm.) and the thickest was 2.0 millimeters. As previously stated, nut types B and D (the elliptical and obovate nut forms) were the easiest to crack. Nut type A was the most difficult and had generally the thickest shell. The seed coat color range was from a light tan to a bronze color. The seed itself was in all cases sweet although certain of the nuts had a more pleasing taste than others. The nuts eventually became rancid though 3 years of storage in a heated room did not cause the bulk of the test samples to change in flavor. This is unlike the pecan which, stored in the same room with the hickory nuts, became rancid by the following year after collection. Summary of Observations The following observations concerning shagbark hickory may be made from this study: (1) The buds of shagbark fall into 2 classes based on bud shape, (1) globose-ovate and (2) elliptical, the latter being the largest bud as a rule. (2) The buds of shagbark fall into 2 classes based upon the length of the attenuated apex of the outer bud scales. The elliptical form of bud consistently had the longest drawn out apex. (3) Normal buds of shagbark occur singly on the twigs above the lobed leaf scar; however, 2, 3 or 4 superposed buds may occur on very fast grown sprouts or terminal shoots of vigorously growing trees. (4) The twigs of shagbark are pubescent but range in degrees from almost none to densely pubescent. The fastest grown twigs are apt to be the least pubescent. (5) Leaves are compound with 3-5 leaflets commonly found and 7 leaflets rarely found. (6) Leaflet shapes varied from tree to tree being ovate, obovate or elliptical. (7) Leaflet margins with one exception were more or less ciliate. (8) Most female flowers of shagbark have 2 stigmatic lobes, however, 3 stigmatic lobes resulting in triangular nuts are not uncommon. (9) The typical male ament is three branched but one and two branched aments have been observed. (10) The husk of shagbark varies in thickness from 1/8 inch to 1/2 inch in thickness when dry. The usual husk is 4-parted but one tree bore 5-parted husks consistently. The average husk thickness is around 1/4 inch. (12) There are three general fruit shapes, (1) globose, (2) ovoid and (3) obovate.