138 UNIVERSITY OF CALIFORNIA EXPERIMENT STATION. 



John Wolfskill east of the road and that of his brother on the west 

 side, there are a great many old California black walnut trees, the old- 

 est being a row along the creek bank to the northwest of the road. 

 These trees, according to a statement of Mrs. S. Wolfskill, were planted 

 about 1855 by a man named McMahan, from nuts obtained in the 

 mountains east of Napa. (Presumably from the trees which we have 

 described.) Mrs. Wolfskill states that all the black walnut trees in this 

 vicinity originated from this planting. According to the recollection 

 of her sons, Joe and Will, however, John Wolfskill brought walnuts 

 from the Sacramento River about 1860 and planted them on the ranch. 

 Mr. W. W. Smith, of Vacaville, recollects that a man by the name of 

 Percy Wiggins, who formerly lived in Napa, told him that he found 

 walnuts growing wild in Conn Valley in the northern part of Napa 

 Valley, and planted a nursery of these about 1858. He sold all these 

 trees but one and allowed this one to grow where it stood, which was 

 in Browns Valley west of Napa. Mr. Smith took nuts from this tree 

 in 1873 and raised the trees which stand along the road on what is now 

 the Henry Bassford place near Vacaville, which trees were cut off and 

 worked over to English walnuts after they were a foot or more in 

 diameter. 



We need not occupy our space with further details of this sort, hav- 

 ing given enough of this historical matter to show that the origin of 

 most of these old trees can be traced by inquiry among old settlers. 



SOUTHERN CALIFORNIA TYPE. 



In the southern part of the State black walnut trees, apparently 

 indigenous, are found growing over a considerable area, and, contrary 

 to the case in the northern part of the State, very few such trees have 

 been planted out along roadsides or for ornament. The southernmost 

 point at which the tree, to our knowledge, is found growing is in the 

 Santiago Canon east of the city of Orange. From this point north it 

 occurs sparingly near the mouth of the Santa Ana Canon, abundantly 

 in Brea Canon along the road between Fullerton and Pomona, and 

 scattered through various canons in the Puente hills west of this road. 

 It is quite abundant in the San Jose hills west of Pomona, especially 

 in the so-called Walnut Wash, which extends down toward Covina. 

 The species is scattered sparingly along the southern base of the high 

 mountains from the Cajon Pass above San Bernardino to Garvanza, 

 near Los Angeles. In the Santa Monica Mountains the tree is abun- 

 dant, especially on the northern slopes, near Lankershim, near the north 

 opening of the Cajuenga Pass, and in all canons through this range on 



