X CONTENTS. 



CHAPTER X. 



PA.OBS 



MANUFACTURE OF BONE DUST AND OF BONE SUPER- 

 PHOSPHATE (VITRIOLIZED BONES). 



Fertilizing value of bone — Storing, classifying, sorting and crushing bones 

 — Storing — Classification of bones — 1. Kitchen bones — 2. Horse 

 bones or knackers' bones — 3. Buried bones — 4. Bullocks' heads 

 (sheep's heads)— 5. Scraps and waste — 6. Hornpiths — Boue picking 

 — Bone crushing — 1. Slow-speed crusher — 2. Very quick-speed 

 machine — Extraction of fat from bones — 1. Extraction of fat from 

 bones by water — 2. Fat extraction from bones by steam — 3. Extrac- 

 tion of fat from bones by benzine — Purification of bone fat — Bleach- 

 ing of brown bone fat — Manufacture of bone dust — Classification of 

 bone dust — 1. Normal bone dusts or bone dust No. — 2. Bone dusts 

 (without any other designation) — 3. Degelatinized boue dusts — 4. 

 Mixed manure dusts — Meat dust (meat meal) — Adulteration — 

 Manufacturing of bone superphosphates — Vitriolized bones — 

 Vitriolated bones — Mixture of bone superphosphate (dissolved bones) 

 and nitrogenous matter — Blood — Horn — Leather waste — Animal 

 Charcoal — Bone ash — Manufacture of precipitated phosphate of 

 lime ------------ 178-196 



CHAPTER XI. 



MANUFACTURE OF BASIC SLAG. 



Origin of basic slag — The nature of basic slag — Tetraphosphate of calcium 

 ^Solubility of basic slag — Crushing of basic slag — Remarks on the 

 use of basic slag — Graphic illustrations of the manufacture of basic 

 slag — Basic slag contracts — Sampling analysis - - - - 197-217 



CHAPTER XII. 

 NITROGENOUS MANURES. 



Nitrate of soda — Nitric acid — Chili nitrate of soda — The caliche terra 

 salitrosa — 1. Open cast-iron pans — Paradas — 2. Cylindrical vertical 

 pans — Maquinas — 3. Vessels heated by a closed tubular bundle 

 (■? steam coil) — Storing and handling of nitrate — ProduC^ion of 

 nitrate in 1907 — Ammoniacal salts — Manufacture of sulpbate of 

 ammonia by distillation of gas liquor — Production of ammonia in 

 the manufacture of coke — Recovery of auunouia from blast furnaces — 

 Recovery of ammonia formed in gas producers — Siemens', Schilling's, 

 Powson's, Wilson's and Mond's — Mond's process — 2. Bourgeois and 

 Lencauchez's process — Manufacturing plant — Condensers — Stan- 

 dard washer — Distilling plant - Naked tire stills— The English still 

 — Mallet's still — Lunge's still — Feldmaun's still— Gruneberg and 

 Blum's still — Manufacture of sulphate of ammonia from urine — 

 Utilization of peat in the manufacture of ammoniacal salt — 

 Recuperation of the ammonia — Gaillot and Brisset process — Muntz 

 and Girard's process — Manufacture of sulphate of ammonia from peat 

 by the Mond process — Crude ammonia from spent oxide - - 218-254 



