EXPERIMENT STATION RECORD. 



Editor: E. W. ALLEN, Pn. D., Assistant Director. 



EDITORIAL DEPARTMENTS. 



Chemiptry, Dairy Farming, and Dairying — The Editor and H. W. Lawson. 

 Meteorology, Fertilizers and Soils (including methods of analysis), and Agricultural 



F.ngineering — W. H. Beal. 

 Botany and Diseases of Plants — Walter H. Evans, Ph. D. 

 Foods and Animal Production — C. F. Langworthy, Ph. D. 

 Field Crops — J. I. Sciiulte. 



Entomology and Veterinary Science — E. V. Wilcox, Ph. D. 

 Horticulture — C. B. Smith. 

 With the cooiDeration of the scientitic divisions of the Department. 



CONTENTS OF VOL. XV, NO. 8. 



Editorial notes: _ P&ge. 



A respiration calorimeter for farm animals 737 



Kural economics as a department of agricultural education 739 



Instruction in rural economics in European countries 741 



Recent work in agricultural science 744 



Notes 832 



SUBJECT LIST OF ABSTRACTS. 



CHEMISTRY. 



Determination of citric-acid soluble phosphoric acid in Thomas slag, 0. 



Bottcher 744 



Inapplicability of the so-called Maercker-Biihring solution, H. Svoboda 744 



Calculation of phosphoric acid from magnesium pyrophosphate, T. Kiimpfer.. 744 



Organic matter in soils and subsoils, F. K. Cameron and J. F. Breazeale . 744 



Determination of assimilable plant food by extraction of soils, H. G. Soder- 



baum 745 



A contribution to soil analysis, O. Forster 745 



Methods of physical and chemical soil analysis, E. W. Hilgard 746 



Rapid gravimetric method of estimating lime, F. B. Guthrie and C. R. Barker. 746 



Determination of calcium in the form of oxalate, J. Van Dormael 746 



Some recent methods of technical water analysis, H. R. Procter 746 



Separation and determination of iron and phosphoric acid in waters, H. Causae. 746 



The direct estimation of free carbonic acid in natural waters, A. McGill 746 



Tlie determination of hardness in waters, P. Drawe 746 



Determination of hardness in waters, E. Basch 746 



Determination of hardness in waters, F. Auerbach 747 



Modifications of Pelonze-Fresenius method for nitric acid, L. Debourdeaux . . . 747 



On a new volumetric method of determining nitric acid, L. Debourdeaux 747 



On the dissociation of alkaline carbonates, P. Lebeau 747 



Composition of commercial alkalis ("concentrated lye" ), G. E. Colby 747 



The conversion of calcium oxalate to the sulphate, A. N. Clark 747 



Determination of alkalis, especially in plant substances, H. Neubauer 747 



I 



