CONTENTS. 



Organization of the Station ii 



Announcements , vn 



Publications issued in 1920 x 



Station Notes xn 



Wheat Investigations. I. Pure Lines. Summary. (Bulletin 285).. 1 



Climate and soil relations (Bulletin 285) 8 



Characteristics of Aroostook wheats (Bulletin 285) 11 



Origin of pure lines at Aroostook Farm (Bulletin 285) 14 



Analysis of data (Bulletin 285) 17 



Chemical characters of pure lines (Bulletin 285) 27 



Baking tests of the pure lines (Bulletin 285) 35 



Relation between protein, gluten content and size of loaf 



(Bulletin 285) 42 



Discussion and conclusions (Bulletin 285) 44 



The Variation of Milk Secretion with Age in Jersey Cattle. 



Summary. (Bulletin 286) 49 



Variation at commencement of test. (Bulletin 286) 52' 



Correlation of 8 months' milk production with age at test. 



(Bulletin 286) 56' 



Regression of milk production on age (Bulletin 286) 58 



Self Sterility and Cross Sterility in the Apple. Summary. 



(Bulletin 287) 61' 



Self sterility and self fertility (Bulletin 287) 63 



Cross sterility and cross fertility (Bulletin 287).... 69' 



Vigor and size of apples from selfed or crossed varieties 



(Bulletin 287) 77 



Causes of self sterility and cross sterility (Bulletin 287) 81 



Some Observations Upon the Effect of Borax in Fertilizers. 



Summary. (Bulletin 288) 89' 



Introduction (Bulletin 288) 90 ; 



Field observations on potatoes in 1919 (Bulletin 288) 94 



Injury in relation to fertilizer used (Bulletin 288) 95' 



Greenhouse experiments with fertilizers containing borax 



(Bulletin 288) 103 



Work with potatoes (Bulletin 288) 105 



Results from greenhouse experiments with potatoes (Bulletin 288) 107 



Work with other crops (Bulletin 288) 118 



Beans (Bulletin 288) 118 



Oats, wheat and buckwheat (Bulletin 288) 120 



The Correlation Between Milk Yield of One Lactation and That 



of Succeeding Lactations. Summary. (Bulletin 289) 121 



Correlation of milk production of one age with any other age 



(Bulletin 289) 123 



