18 UNIV. OF N. H. AGR. EXPERIMENT STATION [Bulletin 250 



number of seeds produced. The varieties of pollen that produced the 

 smallest set of fruit produced only about one-half the number of seeds in 

 the mature fruit, and nearly 50 per cent of the apples were lopsided. 

 Mcintosh pollinated by Delicious and Oldenberg gave only 5 and 9 per 

 cent lopsided fruit. 



Of all the fruits harvested from two Mcintosh trees, about 60 per cent 

 were produced from lateral flowers on the cluster; the remaining 40 per 

 cent came from the terminal flowers. {Purnell Fund.) 



A STUDY OF FRUIT IN STORAGE 



A study of the changes occurring in Baldwin apples during storage was 

 continued by L. P. Latimer. Duplicate lots of large and small apples were 

 stored in common storage in Wilton and cold storage in Manchester. At 

 Manchester a temperature of 31 to 32 degrees Fahrenheit was maintained 

 throughout the season. The temperature at Wilton varied from 28 to 34 

 degrees. 



Apples tended to ripen more rapidly in common storage. Large apples 

 again colored up more rapidly than small apples in both storages, and there 

 was a tendency for all apples to lose weight slightly and to decrease slightly 

 in diameter. 



A slight decrease in the electrical resistance of the fruit tissue occurred 

 until February 2, when a slight rise in resistance continued until April, 

 which was followed by a rapid rise in electrical resistance amounting to 

 10 per cent by May 1. There was a slight tendency for common stored 

 apples to show a rise in electrical resistance before cold stored fruit. On 

 an average the electrical resistance of the juice of small apples was 15 per 

 cent greater than for juice of large apples, indicating a larger amount of 

 ionizable substance in the larger fruits which were generally of better 

 quality. 



There was a decrease in the freezing point depression of the juice be- 

 tween January 12 and February 2, amounting to 5 per cent. No further 

 change occurred until April 1, when a rise began which reached 10 per 

 cent by May 1. During this same period there was a decrease in sucrose 

 content of 50 per cent. 



Respiration measurements indicated little difference between the effects 

 of common and cold storage. {Purnell Fund.) 



ARSENIC RESIDUES ON APPLES 



Three applications of a cover spray of an arsenical poison on apple 

 trees, even under the conditions obtaining in the relatively humid climate 

 of New Hampshire, led to a considerable proportion of the fruits showing 

 more arsenical residue than is tolerated under the pure food and drug laws. 

 Over a period of two years analyses also indicate, other things being 

 equal, that lead arsenate adheres to the fruit in larger quantities than 

 calcium arsenate. 



Apples were selected for analysis from the four quarters of the tree and, 

 with the exception of the east side where the amount of residue appeared 

 to be less, no significant differences in the amounts of residue were found. 

 The exception is due, it is thought, to the failure of the sprayers to obtain 

 a complete cover against prevailing winds. Fruits on the lower branches 



