AGRICULTURAL BOTANY, CHEMISTRY AXD PHYSIOLOGY OF PI.AXTS 



1753 



used in conjunction with supeq5hos])hate or basic slag. It i)rovcd superior 

 to ammonium sulphate. 



With rice, calcium cyanamide and ammonium sulphate were equally 

 successful and both were superior to nitrate. Applications of molasses had 

 no appreciable effect. A double superphosphate was tested against Angaur 

 phosphate and it was shown that in order to obtain the same results the 

 dressing of Angaur phosphate had to be three times as large as that of the 

 double superphosphate. The land was treated with sulphuric acid to destroy 

 the weeds, and no ill effects could be detected on the subsequent rice crop. 



With citronella grass {Andropogon Nardus), vulcanphonolite (i) pro- 

 duced no effect. The best results were obtained with a complete manure 

 consisting of ammonium sulphate, potassium sulphate and double super- 

 phosphate. 



1266 - The Flora of the Belgian Coast. — Massart T-, (Brussels Uuiversity) in Annahs 

 de Geographic, Year XXV, Xo. 137, pp. 321-327. Paris, September 15, 1916. 



An account is given of the evolution of the fjoia on the Belgian coast 

 with special reference to its origin. No endemic species has been evolved 

 on the Belgian coast. Fossil plant remains are rarely found, but such as 

 are found, e. g. the sea buckthorn {Hippophae ramnoides) would indicate 

 that in the pleistocene period when the region was inhabited by reindeer, 

 the land was occupied by a flora adapted to a colder zone, and that with 

 the return of a more temperate climate both fauna and flora retreated 

 northwards. 



The majority of the members of the present flora must ha\"e originated 

 by immigration. The writer classifies the species into two groups, a 

 smaller one containing plants jieculiar to the coast land and a nuich larger 

 group made up of the mo^e abundant species. The latter are found equally 

 on the more inland tracts and for the most part originated from the Fle- 

 mish sands. A few calcicole species such as Helianthns vulgare must have 

 migrated from the more distant calcareous regions of the Meuse or the 

 I'as de Calais. Finally the true marine plants whether distributed on the 

 dunes or on alluvial land can only have come from other coastal regions. 

 The study of the geographical distribution of 69 of these species in Kurope 

 revealed the fact that the majority of the species are characteristic of 

 a warmer climate. In other words the migrations from the south have been 

 far more frequent than those from the north. 



1267 - Nitrogen Fixation, Nitrification, Denitrification and the Production of Sulphur- 

 etted Hydrogen by Bacteria in the Arctic Ocean. -Hca^ehkoB. JI. (Issatchenko 

 B. ly.) in }Ii'i/pH(Li>, OabUHHok AipoHo.uiK iLueHii II. C. h'occoewia (Review of 

 Agricultural Experiments dedicated to the memory' of P. S. KossoviTCH), Vol. X\'II, 

 -No. 2, pp. 175-170. Petrograd, 1916. 



In 1906, a scientific and commercial expedition left the Murmanian 

 coast (Province of Archangel) and travelled to the 73^ lat. north on the coast 

 of Novaya Sembya (an island bounding the sea of Kara on the west.) A 



.\GRICULTTJRAL 



B TANY, 



CHEMISTRY, 



AND 



PHYSIOLOGY 



OF PLANTS 



(i) Tlie trade name given to a ground phosphate. 

 3 



