1919] Coit-Hodgson : Abnormal Sheddiiiff of Washington Navel Orange 313 



meter*" (pi. 41). We are cognizant of criticisms (if this instrument 

 by Briggs and Shantz.** but believe that for our purpose it is suffic- 

 iently accurate. Due to a lack of a sufficient number of these instru- 

 ments we were unable to run a series simultaneously at Edison and 

 at East Bakersfield Init we did oix'rate tliem under as nearly similar 

 conditions at the lattei- place in ]f)17 as at the former in 1!)16. Know- 



Fig. 3. Cumparison of the average daily atiiiometer water loss from the 

 stations referred to in figure 2. 



ing something of the relative harshness (if llic two seasons, lioth as 

 reflected in the amount of dropping and in the data taken I)y the U. S. 

 Weather Bureau observer at Bakersfield, we are able to approximate 

 fairly well the climatic conditions at Edison in 1917 for comparative 

 purpases. The water loss from our different stations at the two locali- 

 ties is well shown in figures 2, 3, 4. and 5 and in table 5. 



At Edison our atmometer stations were selected as follows: "Tree" 

 station was located underneath an orange tree near the center of tiie 

 orchard, about one-half mile to leeward of the edge of the orchard 



<' The Relation of Desert Plants to Soil Moisture ami to Evaporation, Car- 

 negie Inst. Washington, I'ulil. .^0, 190(). 



<8 Comjiarison of the Hourly Kvaiioration Kate of Atnioineters and Free 

 Water .Surfaces with the Transpiration Kate of Medicago soti\-(i. Jour. Agr. Kes., 

 vol. (ISUT), pp. 277-90. 



