Index. 175 



Pag-e. 



Salt River adobe 160 



Salt River gravel 154 



Sanders loam 61 



San Gabriel gravelly loam. (See Maricopa gravelly loam, 



p. 133.) 

 San Gabriel gravelly sand. (See Fresno sand, p. 136.) 

 San Jacinto clay. (See Houston black clay, p. 72.) 



San Joaquin black adobe 1 39 



San Joaquin red adobe 139 



San Joaquin sandy loam 1 55 



San Luis loam 153 



San Luis sand 152 



San Luis sandy loam 153 



Sandhill 45 



Santiago loam 158 



Santiago sandy loam 156 



Santiago silt loam 159 



Sassafras gravelly loam. (See Norfolk silt loam, p. 57.) 

 Sassafras loam. (See Norfolk silt loam, p. 57.) 

 Sassafras sandy loam. (See Norfolk loam, p. 56.) 



Saugatuck sand 119 



Savanna. (See Siramp, p. 48.) 



Sedgwick black clay loam 131 



Sedgwick clay loam 131 



Sedgwick loam 131 



Sedgwick sandy loam 131 



Selma clay 65 



Selma heavy silt loam 62 



Selma silt loam. (See Norfolk sandy loam, p. 55.) 



Sharkey clay 82 



Shelby clay 128 



Shelby sand 120 



Shelby silt loam 126 



Sierra adobe 160 



Sioux clay ^ 116 



Sioux fine sandy loam 115 



Sioux sand 114 



