CONTENTS. 



The use of the Zeiss immersion rcfractometer in the detection of 

 watered milk, .... 



Mahuitrition, 



Caheo or mosaic disease of cucumber and melon, 



Notes on the occurrence of fungous spores on onion seed, 



Plant breeding studies in peas, 



Character of variation in peas, 

 Differences in variability, 

 Correlation coefficients. 

 Correlation of characters, 

 Heredity in peas. 



Coefficients of heredity, 

 Prepotency, .... 

 The Ben Davis group of apples. 

 Description of varieties, . 

 Variation in apples, .... 

 \'ariation in the college orchard, 

 (a) From different trees, . 

 {b) From different parts of the trees. 

 Climatic \'ariations, . 

 Discussion of the variation, 

 Variability of the different lots. 

 Causes of the variation, . 



Summary, 



Fumigation dosage, .... 

 I. Tomatoes, .... 

 Introduction, . 

 Comments and conclusions, 

 II. Cucumbers, .... 

 Introduction, . 

 Comments and general conclusions. 



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