32 STUDIES ON APPLES. 



varieties were secured from lots from the same locality, picked at the 

 same time, which had been kept in cold storage in Chicago. Samples 

 were also secured of the same varieties picked at the usual time, about 

 September 15, from trees in the same localit}^ and situated similarly 

 to those from which the export shipments had been taken. Early in 

 October two barrels of each variety from each picking were shipped 

 to Washington from Chicago in refrigerator cars. By special arrange- 

 ment the apples were sent direct from cold storage to the cars and 

 from the cars to the cold-storage rooms in Washington without expos- 

 ing them to a higher temperature for more than a few moments at a 

 time. 



It is regretted that samples of the early-picked apples were not 

 obtained at the time of picking, but owing to the commercial impor- 

 tance of the shipment in question it seemed advisable to work with this 

 special lot. The apples were received on October 10 and were exam- 

 ined then and at varying intervals afterwards. 



Ki:sn,Ts OK ANALYSES. 



The analytical results are found in Table III, and the platted data 

 in figures.!, 8, 9, and 10. The date of the last examination reported 

 in this bulletin was April 27, 190. It is improbable, however, even 

 if they had been made, that continued analyses would have been of 

 any material value since the apples of all varieties were decaying 

 rapidly. Owing to this fact it is suggested that the results of such 

 analyses would lead to incorrect conclusions regarding the change in 

 composition of apples in storage, because of a probable selective 

 tendency of the rot, it being possible that apples of a certain compo- 

 sition may decay more rapidly than those of a different kind. At 

 the same time no law has been discovered which seems to control or 

 regulate the development of the decay in fruit. The selective ten- 

 dency of decay is suggested, therefore, as a possibility which might 

 lead to erroneous results in the work, and not as a probability indi- 

 cated by the work itself. At the same time it is worth} 7 of comment 

 that after October 21, 1903, when decay began, the change of com- 

 position of the apples in storage which remained sound was noticeably 

 different from the change occurring prior to that date." 



With -reference to the solids, the carbohydrates tended to increase 

 after October 21, in the case of the.earry-picked Ben Davis and the 

 late-picked Ben Davis and Winesap apples. The change in content 

 of carbohydrates was more gradual in the case of the early-picked 

 Winesap. 



