Page 36 



BETTER FRUIT 



April, 1^20 



Department of Agriculture, Etc. 



Continued on page 10. 



all rooms except the two middle rooms 

 on the north side, which were equipped 

 for special low temperature work and 

 have two inches more insulation and 

 correspondingly heavier doors. A brine 

 coil is hung on one side of each room 

 and is covered with a baffle board open 

 at the top and bottom to permit the 

 circulation of air over the coil. One 

 section of this baffle board is hinged 

 to allow access to the coils. Next to 

 this block of finished rooms is space 

 for four more rooms. It is planned to 

 complete these in the near future. The 

 handling room is located next to this 

 space and is equipped with tables for 

 sorting, scales, trucks, and the various 

 paraphernalia of a cold storage plant. 

 In one corner of this room is the ele- 

 vator shaft. 



The second floor is divided in the 

 same general way as the first, eight 

 cold storage rooms being directly over 

 the first floor rooms and the unfinished 

 storage space and handling room occu- 

 pying the same relation to the storage 

 rooms as in the first floor plan. The 

 space over the engine room, 42x26 ft. is 

 a well-equipped plant physiological 

 laboratory. This laboratory is, of 

 course, an exceedingly important part 

 of the equipment, as the physiological 

 aspects of storage are particularly em- 

 phasized in the work. 



The importance of plant physiologi- 

 cal work in connection with cold stor- 

 age is evident when it is considered 

 that most fruits and vegetables are 

 stored alive and the problem is to keep 

 them alive and in an attractive condi- 

 tion until they are to be used. The de- 

 termination of the best condition for 

 storage of any particular fruit or vege- 

 tables then requires a study of the life 

 processes which go on in it after it is 

 removed from the tree or the soil 

 where it was grown, together with a 

 study of the effect of the various en- 

 vironmental conditions obtaining in a 

 storage plant upon these processes. The 

 harvesting and handling of the produce 

 before storage and the conditions under 

 which it is grown often markedly in- 

 fluence the storage life. These factors 

 must be considered in fundamental 

 studies. 



There are a number of problems re- 

 lating to the storage of fruits and vege- 

 tables under investigation at the pres- 

 ent time. One of particular interest is 

 the determination of the effect of freez- 

 ing temperatures on various kinds of 

 fruits and vegetables. This includes 

 determining the actual freezing points 

 of the tissue, the temperature at which 

 frost injury occurs, for it is, of course, 

 possible that certain fruits or vege- 

 tables may be injured by low tempera- 

 tures without the tissue actually freez- 

 ing, and the effect of freezing on the 

 produce. The development of methods 

 for defrosting and methods for the util- 

 ization of frozen produce are also un- 

 der investigation. 



Another problem of rather wide ap- 

 plication under investigation is the ef- 

 fect of gases, such as carbon dioxide. 



carbon monoxide, and the various gases 

 given ofi" by car heaters, on fruits and 

 vegetables. The effect of varying de- 

 grees of humidity on fruits and vege- 

 tables is also receiving considerable at- 

 tention. Other problems of less general 

 interest have been taken up, such as 

 the cold storage of celery, and the 

 changes which take place during stor- 

 age in grapefruit, pears, apples and 

 tomatoes. 



The number of problems under in- 

 vestigation at any one time is, of 

 course, limited by the size of the staff 

 and the funds available. An effort will 

 be made to take up, as rapidly as pos- 

 sible, the problems of fundamental im- 

 portance to the cold storage of fruits 

 and vegetables. It is hoped that results 

 of value both to the producer and to 

 the cold storage industry will be ob- 

 tained in this plant. 



Put WOOD-LARK on Guard 



Gophers can't resist eating WOOD-LARK; eating it they must die. 



Sprinkle WOOD-LARK in the gopher runs now and stop the spring 



multiplying of these destructive pests. 



If your Dealer Hasn 7 WOOD-LARK order today from 



CLARKE-WOODWARD DRUG CO., Portland, Oregon 



SIlllllllltlllllllllllllllllllllllllllllllllllllllllllllllllllllllllfllllMltlltllltllltlllllllllllllllllMllllltlllrV 



I ' ibi WHAT EVERY HOME CANNER SHOULD HAVE I 



ONE of our H.& A. Hand Power Double Seamers. = 

 It is the only hand power aeamer built that will sea! all ; 

 sizes of sanitary fruit and vegetable cans. Write for prices \ 

 and descriptive matte^ to Department T. = 



HENNINGER & AYES MFG. CO., Portland, Ore. [ 



Builders of Seamen and Steam Pressure Canning Outfits z 



.IIIIIIIMUUIIIIIIIIIIIIIIIIilllllMMIMIIilllllllllllll(lllllllllllllllllllllinilllllllllllllllllMIIIIIIIIIIIII»- 



The Safest Means of 

 Frost Prevention 



Don't experiment with makeshift methods. 



BOLTON J Bolton Orchard Heaters are sure. They main- 



iS Orchard HEATE" j tain the temperature, distribute the heat uni- 

 I:/:";';';- PAT D I Kja lO " i formly, and prevent frost damage. 



Send for Booklet 5 

 Tells you all about frost prevention. Filled 

 with valuable information for the grower. 



Urftsl slock of SorfiM Irrigalion Pipe *' **• AMES CO., 



ud Pipe Equipemenl on Ibe PadSc Co»sl 8th and Irwin Streets San Francisco, Calif. 



WHEN WRITING ADVERTISERS MENTION BETTER FRUIT 



