In quoting articles, please mention this BULLETIN. 



CONTENTS 



First Part: ORIGINAI, ARTICI^ES. 

 G. Patan6. — Selection and Hybridisation of American Vines in Italy Page 1393 



Second Part : ABSTRACTS. 



AGRICUIyTURAIv INTEI.I.IGENCE. 



I. — Generai, Information. 



Development of Agriculture in Different Countries. — - 1057. Agriculture in Brittany. 

 Agricultural Institutions. — 1058. Blind Soldiers on the I^and. 



II. — Crops and Cultivation. 



a) General. 



Soil Physics, Chemistry and Microbiology. — 1059. Measurement of the Surface Forces 

 in Soils. — 1060. The Treatment of Peat Beds to Prevent I^oss of Nitrogen Due to Bacterial 

 Activity (Germany). — 1061. The Chemical Composition of Plants as a Guide to the Fer- 

 tility of the Soil. 



Methods of Soil Cultiv.ation. — 1062. The Influence of Relative Area in IntertiUed and 

 Other Classes of Crops on Crop Yield. 



MANURES .\nd M.'vnuring. — 1063. « Tctraphosphate ». — 1064. lyucenie Inoculation Expe- 

 riment, Hawkesbury Agricultural CoUege (New South Wales) 1912-16. 



h) Special. 



Agricultural Botany, Chemistry and Physiology of Plants. — 1065. The Application of 

 Botanical Science to Agriculture. — 1066. A Biochemical Study of Nitrogen in Certain 

 I^egumes. — 1067. The Effect of Heavy Dressings of Mineral Salts on the Development 

 and Structure of Plants. — 1068. Nitrogen Requirements of the Olive Tree. 



Plant Breeding. — 1069. Correlated Characters in Maize Breeding. — 1070. Number of Chro- 

 mosomes and Size of the Nucleus in Some Forms of A nlirrhinum . — 1071 . A Case of Varia- 

 tions observed in the Potato in Holland. — 107c. Experiments on Crossmg two Varieties 

 of Smiflower {Hdianthus annuus X H. agrophylhis A. Gray) to obtain a type resistant to 

 rust, in Russia. 



