(BOUND VOLUME OF BULLETINS)

#4, Methods of Mechanical Analysis of Soils & of Determination of Amount of Moisture in Soils in Field, Washington: GPO, 1896, 24pp, #6, Electrical Method of Determining Moisture Content of Arable Soils, Milton Whitney, Frank D. Gardner & Lyman J. Briggs, 1897, 26pp; #7, Electrical Method of Determining Temperature of Soils by Whitney & Briggs, 1897, 15pp; #8, Electrical Method of Determining Soluble Salt Content of Soils with Results of Investigations on Effect of Water & Soluble Salts on Electrical Resistance of Soils, Whitney & Thos H. Means, 1897, 30pp; #10, Mechanics of Soil Moisture, Briggs, 1897, 24pp; #12, Electrical Method of Moisture Determination in Soils: Results & Modification in 1897, Gardner, 1898, 24pp; #15, Electrical Instruments for Determining Moisture, Temperature, & Soluble Salt Content of Soils, Briggs, 1899, 35pp; #19, Capillary Studies & Filtratrion of Clay from Soil Solutions, Briggs & Macy H. Lapham, 1902, 40pp; Briggs: Salts as Influencing Rate of Evaporation of Water from Soils, (184-198), Necessary Modification in Methods of Mechanical Analysis as Applied to Alkali Soils (173-83), Objects & Methods of Investigating Physical Properties of Soils, (397-410), Investigations on Physical Properties of Soils, (413-21), 1900; Movement & Retention of Water in Soils, 1898, (399-404). Illustrations, halftone plates. 9x6'', half leather, cloth boards. Tanned, shaken, rubbed, G.