CONTENTS. XV 



CHAPTER XV. 



EXPERIMENTS WITH LIME continued. 



Page 



1. Experiments with native phosphate of lime applied alone, . . 238 



2. Suggestions for comparative experiments with burned limes contain- 



ing the phosphate of lime in different proportions, . . 240 



3. Connexion of the geology of a district with the probable success of 



experiments with lime in general, or with lime of different varieties, 242 



4. Suggestions for experiments on over-limed land, . . . 243 



5. Experiments on the comparative economy of large and small doses 



of lime, ........ 244 



6. Experiments on the use of lime in improving the quality of turnips, 



especially on fenny or peaty land, ..... 246 



7. Suggestions for experiments with lime in the diseases called fmgers- 



and-toes in turnips, and sedge or tulip-root in oats, . . 248 



8. Does lime always hasten the ripening of corn ? 250 



9. Suggestions for miscellaneous experiments with lime, . . ib. 



CHAPTER XVI. 



EXPERIMENTS WITH THE COMPOUNDS OF BARYTA AND ALUMINA, AND 

 WITH BURNED CLAY AND SHALE. 



1. Experiments with sulphate of baryta, with sulphuret of barium, and 



with carbonate of baryta, . . . . . .253 



2. Suggestions for experiments with sulphate of alumina and with com- 



mon alum, ........ 254 



3. Experiments with burned clay. What are the qualities which fit a 



clay for burning ]....... 256 



4. Mechanical and chemical effects of burning upon a clay. How it 



afterwards acts when applied to the soil, . . . .259 



5. Suggestions for comparative experiments with burned clay, . 262 



6. Experiments with bituminous and other shales, burned and un burned, 264 



