498 University of California Publications in Agricultural Sciences [Vol. 3 



Soil: A good medium brown fine sandy loam; the field color a grayish brown. 

 The texture uniform throughout the 3 foot section, with a little gravel occa- 

 sionally. Also the texture is variable to about the usual degree, in the 

 field distribution. The color is slightly lighter at about 2 feet and below 

 throughout the 6 feet, with a little variation in an increasing amount of 

 coarser sands. 



History: Chase, Eiverside, owner (?). Planted to apricots, 2 years old. Inter- 

 planted to melons. Sample collected May 24, 1916. 

 Depths of horizons: 



25-A 0-12 inches. 25-B 12-24 inches. 25-C 24-36 inches. 



No. 26 — San Joaquin Sandy Loam 



Location: On the high bluffs about 1}4 miles southeast of Del Mar station, San 

 Diego County, close to the road that runs back along the main ridge. About 

 50 feet north of the road where it swings south to get around the head of 

 the big arroyo from the north. 



Soil : A brownish red sandy loam. Surface covered with a moderate growth of 

 the low chapparal common to these exposed ridges. Soil heavily laden with 

 iron concretions. Surface has the usual hog wallows characteristic of the 

 San Joaquin series. 

 0- 6 inches— Reddish brown sandy loam, many concretions. Dry. 

 6-13 inches — Clay (sandy), reddish in cracks, and bluish inside of lumps and 

 where not weathered. 

 13-22 inches — Clay, mostly bluish gray. 

 22-38 inches — Boring very difficult, due to the heavy nature of the clayey 



moist material. Color bluish. 

 About 40 inches — Hardpan. Very compact. 



History : Probably never farmed. Becently streets cleared, and an attempt made 

 to sell lots for building. Value for agriculture — none without irrigation. 

 Sample collected May 25, 1916. 



Depths of horizons: 



26-A 0-6 inches. 26-B 6-13 inches. 26-C 13-22 inches. 



