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Lawes, J. B. and Gilbert, J. H. 1883. XXVI. Supplement to former paper, entitled—"Experimental inquiry into the composition of some of the animals fed and slaughtered as human food.”—Composition of the ash of the entire animals, and of certain separated parts. Philosophical Transactions Of The Royal Society Of London. 174, pp. 865-890. https://doi.org/10.1098/rstl.1883.0026
Lawes, J. B., Gilbert, J. H. and Masters, M. T. 1882. Agricultural, botanical, and chemical results of experiments on the mixed herbage of permanent meadow, conducted for more than twenty years in succession on the same land Part. II. The botanical results (XXVIII). Philosophical Transactions Of The Royal Society Of London. 173, pp. 1181-1413. https://doi.org/10.1098/rstl.1882.0029
Lawes, J. B. and Gilbert, J. H. 1880. Agricultural, botanical, and chemical results of experiments on the mixed herbage of permanent meadow, conducted for more than twenty years in succession on the same land.—Part I (X). Philosophical Transactions Of The Royal Society Of London. 171, pp. 289-416. https://doi.org/10.1098/rstl.1880.0010
Lawes, J. B., Gilbert, J. H. and Pugh, E. 1861. XXIII On the sources of the nitrogen of vegetation; with special reference to the question whether plants assimilate free or uncombined nitrogen. Philosophical Transactions Of The Royal Society Of London. 151, pp. 431-577. https://doi.org/10.1098/rstl.1861.0024