320 APPENDIX 



"On the Present Position of the Question of the Sources of Nitrogen of 

 Vegetation" (by J. B. L. and J. H. G., Phil. Trans., 180, B, 1889, 1), 

 R. Mem., Vol. I. (4to), No. 2. 



" The History of a Field newly laid down to Permanent Grass " (by J. B. L., 

 J.R.A.S., 60, 1889, 1), R. Mem., Vol. VI., No. 14. 



"The Amount of Nitric Acid in the Rain-water at Rothamsted, with notes 

 on the Analysis of Rain-water" (by R. W., T.C.S., 55, 1889, 537). 



" Results of Experiments at Rothamsted on the Growth of Leguminous Crops 

 for many years in succession on the same Land " (by J. H. G., Agric. 

 Students' Gazette, New Series, 4, 1889, 137; and .4, 1890, 179), R. Mem., 

 Vol. VI., No. 15. 



"New Experiments on the Question of the Fixation of Free Nitrogen (by 

 J. B. L. and J. H. G., Proc. Roy. Soc., 1890, 47, 85-118), R. Mem., Vol. 

 VI., No. 16. 



"The Food of our Agricultural Crops" (by J. B. L., J.R.A.S., 51, 1890, 69), 

 R. Mem., Vol. VI., No. 17. 



" Results of Experiments at Rothamsted on the Question of the Fixation of 

 Free Nitrogen " (by J. H. G., Agric. Students' Gazette, New Series, 5, 

 1890, 33; and 5, 1891, 62), R. Mem., Vol. VII., No. 1. 



" Condiments " (by J. B. L., The Farmer and Stockbreeder's Year-Book, 



1890, 25). 



" The Market Value of the Different Samples of Wheat and Barley grown in 

 1889 on the Experimental Plots at Rothamsted " ^(by Lawes Agric- 

 Trust Committee, J.R.A.S., 51, 1890, 432). 



" Observations on Rainfall, Percolation, and Evaporation, at Rothamsted ; 

 with Tabular Results for Twenty Harvest-years, 1870-1 to 1889-90 

 inclusive" (by J. H. G., Proc. Inst. Civil Engineers, 105, 1891, Part III.), 

 R. Mem., Vol. VII., No. 2. 



" Results of Experiments at Rothamsted on the Question of the Fixation of 

 Free Nitrogen" (by J. H. G., Nature, Nov. 12, 1891), R. Mem., Vol. 

 VII., No. 3. 



" The Sources of the Nitrogen of our Leguminous Crops " (by J. B. L. and 

 J. H. G., J.R.A.S., 52, 1891, 657), R. Mem., Vol. VII., No. 4. 



"On Nitrification," Part IV. (by R. W., P.C.S., 7, 1891, 927; T.C.S., 59, 



1891, 484). 



"Six Lectures on the Investigations at Rothamsted Experimental Station, 

 delivered under the provisions of the Lawes Agricultural Trust before 

 the Assoc. of American Agric. Colleges and Expt. Stations, at 

 Washington, D.C., Aug. 12-18, 1891 " (by R. W., U.S. Dept. of Agric., 

 Office of Expt. Stations, Bui. No. 8, Washington, 1892). 



"Allotments and Small Holdings" (by J. B. L. and J. H. G., J.R.A.S., 53, 



1892, 439), R. Mem., Vol. VII., No. 5. 



"Nutritive Ratios" (by J. B. L., Agric. Students' Gazette, New Series, 6, 

 1892, 1). 



