PEAR CROWING IN CALIFORNIA. 231 



Northern and Central California Interior Valley Region — All interior 

 counties or portions of counties, included in the Sacramento, San 

 Joaquin and other inland river valleys from the northern l)oundary 

 of Tehama County to the Tehachapi Mountains. 



Southern California Desert Hcgion — The dry desert sections of Kein, 

 Los Anoreles and San Bernardino counties. 



Imperial Valley Region — The low, arid, liot a p:ri cultural sections of 

 Riverside and Imperial counties. 



Sierra Nevada Foothill and Mountain lugion — All counties or portions 



of counties in the foothills or mountains proper of the Sierra Nevada 



Range on the western slope. 

 Modoc-Inyo Region — All sections east of the Sierra Nevada ^lountains 



in California po-ssessing the i-igorous climate of Modoc County on the 



north and I mo on the south. 



13 



