ANNUAL REPORT, 1929 361 



Dry Matter and Nitrogen Removed from the Plots 

 {Kilograms 'per Acre) 



The particularly interesting result is that after an interval of five years 

 of continuous cropping and removal of nitrogen, the soil which has not 

 grown a leguminous crop in that period held its own and something more, 

 measured by both dry matter and nitrogen in the crops removed^ this 

 year. 



Chemical Changes in. the Cranberry During Ripening and After Hajr- 

 vesting. (F. W. Morse). The work during the past year has been prin- 

 cipally the analysis of numerous varieties of cranberries and samples 

 from different bogs. Numerous specimens of the 1929 crop have been 

 received from New Jersey and Wisconsin cranberry growers, as well as 

 from the Cape Cod region. At this time it is possible to report nothing 

 more than the range of percentages found by the determination of total 

 acid, total sugar and dry matter in the varieties so far examined. 



Ten varieties of the crop of 1928 were received from Cape Cod growers 

 in November of that year. During October and November of this year, 

 there have been analyzed 41 varieties of the crop of 1929 which were 

 representative of all three states — Massachusetts, New Jersey and Wis- 

 consin. The results expressed as minima and maxima so far observed 

 are as follows: 



Dry Matter Total Sugar Total Acid 

 % % % 



1928 .10 varieties 11.3-13.1 3.45-5.22 2.14-2.79 



1929 41 varieties 11.2-13.5 2.50-5.45 2.07-2.71 



The much wider range in percentages of sugar in 1929 was probaBly 

 due to a wide variation in the maturity of the fruit when harvested. The 

 study of cranberries during ripening has shown that sugar is rapidly 

 increased during the last week on the vines, accompanied by a noticeable 

 development of color of the berries. Several samples of this year's crop 

 were very light colored, and the lowest percentages of sugar were found 

 among them. 



Riedord of the Statioln Herd. (J. B. Lindsey and J. G. Archibald). This 

 project has been carried on over a long period of years incidental to 

 other work. The records for 192i8 show that twelve cows (ten grade 

 Ilolsteins, one grade Jersey, and one pure bred Jersey) completed a 

 normal lactation period during the jear. The average production was 

 9045 pounds of milk testing 12.27 per cent solids and 3.8 per cent fat, 

 with a feed cost per cow of $164.97, or 4.01 cents per quart of milk. 

 Feed cost was based on hay at $20, silage at $8, greem feed at $8 a ton, 

 and grain at market price. Under conditions prevailing it was not prac- 

 ticable to determine the overhead. 



