XIV 



LIST OF TABLES. 



- 50-9 



83 



TABLE PAGET 



XXXI. Analysis of Alta Vela phosphate ----- 41 



XXXII. Analysis of Monk's Island phosphate - - - - 41 



XKXIII. Analysis of Baker Island guano 43 



XXXIV. Analysis of Jarvis Island guano ------ 44 



XXXV. Analyses of Fanning I^iland guano ----- 44 



XXXVI. Analyses of Brown Island guano ----- 44 



XXXVII. Analyses of Lacepede Island guano 45 



XXXVIII. and XXXIX. Analyses of Mejillones guano - - - 46-7 



XL. Analysis of Clipperton Island guano 47 



XLa. Geographical distribution of phosphate of lime and guano 

 deposits and their chemical composition 



XLI. Amount and strength of acid required to dissolve various 

 phosphates --------- 



XLII. Results of experiments with ordinary superphosphate and 

 superphosphate dried at different temperatures on 

 Ligouro oats --------- 



XLIII. Showing changes in composition which Tennessee super- 

 phosphates undergo in four and a half months from 

 date of making --..---. 



XLIV. Showing for a succession of years the increase in hay from 

 one application of basic slag to a poor meadow 



XLV. Number of cwt. required in a 5 ton mixing, or of tons in a 

 100 ton mixing of a superphosphate ot a given strength 

 in P«0.:, to produce a manure of a given strength 

 in P^g - - - 



XLVI. Showing in cwt. the amount of sulphate of ammonia of 

 different strengths that must be contained in a 5 ton 

 heap to get a manure containing from 1'850 up to 5 

 per cent nitrogen .---.- 



XLVII. Showing the analysis of double superphosphate - 



XLVIII. Chemical composition of ossein . - - - - 



XLIX. Analysis of an ox bone. (Berzelius) - - - - 



XLIXa. Rosinate analysis of bones as supplied to manure factories 



L. Analysis of bone dust from fat extracted bones - 



LI. Analyses of new and used and spent bone char. (Pierre) 



LII. Showing the composition of five samples bone ash. (Voelcker) 193 



LIIL. Analysis of precipitated phosphate of lime - - - - 194 



LIV. Analysis of cast-iron showing phosphorus content - - 200 



LV. Analyses of crystals of tetrabasic phosphate of lime found 



in basic slag --------- ^04 



LVI. Analyses of hexagonal crystals found in basic slag - - 204 



LVII. Analyses of black needles, magnetic and non-magnetic, 

 found in basic slag ------- 



LVIII. Analyses of blue crystals found in basic slag . - - 



LIX. Solubility of basic slag in water saturated with carbonic 

 acid - - . ..---.- 



LX. Showing the results of Jensch's researches on basic slag 



LXI. Effect of composition of basic slag on facility of grinding - 



LXII. Showing the influence of the ratio of the peroxide of iron 



to protoxide on the ease of grinding of basic slag - - 213 



129 



1.37 



141 



146 



149-50 

 156 

 173 

 174 

 174 

 185 

 192 



206 

 206 



209 

 210 



213 



