318 



EXPERIMENT STATION EECOED. 



juice after it had been kept for a time after sterilization, even ttiough in cold 

 storage at from 32 to 35°. 



" Orange juice also underwent a marked darkening in color when kept at 

 room temperatures after being sterilized. The color was fairly well retained 

 when atmospheric oxygen was excluded by sterilizing the juice and subse- 

 quently keeping it in vacuum or in carbon dioxid, and the change in color 

 was well controlled by keeping the juice at low temperatures. The flavor of 

 sterilized orange juice, already slightly injured by the heating necessary for 

 sterilization, underwent further changes when kept at room temperatures. It 

 was found that by keeping the juice in cold storage at from 32 to 35° the flavor 

 was well retained for long periods. 



" The distinctive colors and flavors of all fruit juices kept in freezing storage 

 at about — 10° C. (14° F.) were found to remain practically unchanged during 

 many months, except that a peculiar coagulation of much of the coloring 

 matter appeared in the juice of the black raspberry. It was possible to con- 

 centrate fruit juices to sirups by freezing out the water as ice and centrifu- 

 galizing. Characteristic colors and flavors were well retained on concentrating. 



" Infusorial earth greatly promotes the filtering of fruit juices, as it retards 

 greatly the clogging of the filter." 



When, what, and how to can and preserve fruits and vegetables in the 

 home, G. W. Caevee {Alabama Tuskcgee Sta. Bui. 27 {1915), pp. 3-8).— A 

 description of home canning methods. The material is arranged in seasonal 

 form. A section on drying fruits and vegetables is included. 



METEOROLOGY. 



The rainfall regime of the several States, B. C. Waxlis (Mo. Weather Rev., 

 43 (1915), No. Jf, pp. 176-178, fig. i).— In this article an attempt is made to 

 groui) the States which have similar rainfall conditions on the basis of rainfall 

 data used in the construction of equipluves presented in previous articles 

 (E. S. R., 32, p. 119) . The results are shown in the following map : 



Fig. 3. — Approximate grouping of States as rainfall sections. 



