7--Northwestern--a new, good hardy nut

8--Pearl--semi-hardy--good (from Iowa)

9--Vandersloot--semi-hardy--very large

10--Thomas--tender to our winters--otherwise very good (from
Pennsylvania)

11--Stabler--tender--many nuts single-lobed

12--Throp--tender, many nuts single-lobed

A friend of mine, who lives in Mason, Wisconsin, discovered a black
walnut tree growing in that vicinity. Since Mason is in the northern
part of the state, about 47° parallel north, this tree grows the
farthest north of any large black walnut I know of. I would estimate its
height at about sixty-five feet and its trunk diameter at about sixteen
inches at breast-height. Because of the short growing season there, the
nuts do not mature, being barely edible, due to their shrinkage while
drying. Some seasons this failure to mature nuts also occurs in such
varieties as the Thomas, the Ohio and even the Stabler at my River Falls
farm, which is nearly 150 miles south of Mason. Such nuts will sprout,
however, and seedlings were raised from the immature nuts of this
northern tree. Incidentally these seedlings appear to be just as hardy
in wood growth as their parent tree. I have also grafted scionwood from
the original tree on black walnut stocks at my farm in order to
determine more completely the quality of this variety. Since grafted,
these trees have borne large, easy to crack mature nuts and are
propagated under the varietal name (Bayfield) since the parent tree is