METHODS OF PREPARATION. 53 



VI. DRUGS, PERFUMES, AND CHEMICAL PRODUCTS. 



30. MANUFACTCTRE OF PEEFUMES. 



31. MANUFAOTUEE OF IVOEY-BLACK. 



32. MANUFACTUEB OF PEUSSIATES. 



33. MANDFACTUEE OF MUEEXIDES. 



34. PEEPAEATION OF COCHmEAL COLOES. 



35. MANUFAOTUEE OF INKS FEOM ANIMAL SUBSTANCES. 



36. PEEPAEATION OF ALBUMEN. 



37. MANUFAOTUEE OF PEPSIN. 



38. MANUFAOTUEE OF PHOSPHOEUS. 



39. MANUFAOTUEE OF SAL AMMONIAC. 



40. MANUFAOTUEE OF AMMONIA. 



41. MANUFAOTUEE OF ALBUMEN PEEPAEATIONS. 



42. MANUFAOTUEE OF PEOPYL AMINE. 



43. MANUFAOTUEE OF FOEMIO ACID. 



44. MANUFAOTUEE OF CAEBAZOTATES. 



VII. MANUFACTURE OF FERTILIZERS. 



45. PEEPAEATION OF GUANO. 



a. Model of fish-gaauo works: 



Grinders and pulverizers. 



Mixers. 



Guano in its various stages, with its ingredients, South Caro- 

 lina phosphates, Navassa phosphates, scrap, (crude, and 

 dried,) sulphuric acid, kainite, screened and unscreened 

 guano, and sea-weed used in preparation. 



VIIL LIMES. 



46. BUENING OF LIME. 



a. Models of kilns for burning shells. 



IX. PRESERVATION OF THE ANIMAL FOR SCIEN- 

 TIFIC USES. 



47. APPAEATUS FOE MAKING AND PEESEEVING ALCO- 

 HOLIC SPECIMENS. 



a. Tanks and jars : 



Agassiz collecting-tank. 



