51. Alloy of lead, copper, and silver. 72. Cerusite. 52. Alloy of tin and copper.

53. Alloy of zinc and cadmium.

60. Mica.

61. Felspar.

62. Albite.

63. Petalite.

64. Hematite.

65. Rutile.

66. Pyrolusite.

67. Lepidolite.

68. Apatite.

69. Franklinite. ✔

70. Pitchblende.

71. Chromic iron. ✔

TABLE OF CONTENTS.

PAGE

Preface,.

Introduction,

vii

List of substances serving to illustrate the reactions, .

xiv

FIRST CHAPTER.

AUXILIARY APPARATUS AND REAGENTS,

21-24

SECOND CHAPTER.

GENERAL ROUTINE OF BLOW-PIPE ANALYSIS,

Examination in a closed glass tube,

Examination in a glass tube open at both ends,

2*

Examination on charcoal, per se,

Examination in the platinum-pointed pincers,

Examination with borax and salt of phosphorus, .

Examination with carbonate of soda,

Examination with solution of cobalt, .

B

CHARACTERISTICS OF THE MOST IMPORTANT ORES; THEIR BE-

HAVIOR BEFORE THE BLOW-PIPE, AND TO SOLVENTS,

Ores of antimony, .