TABLE OF CONTENTS 
PACE 
Micro- Structure and Probable Origin of Flint-Like Slate 
near Chapel Hill, North Carolina. — H. N. Eaton 1 
Field for Economic Plant Breeding in the Cotton Belt. 
— David R. Coker 9 
Notes on the Life-Zones in North Carolina. — C. S. Brimley 
and Franklin Sherman , Jr 14 
A Bacteriologic Study of the Blank Cartridge. — David II. 
Dolly 23 
Review 29 
Papers Relating to Science 30 
Ornithological Work in North Carolina. — T . Gilbert Pearson 33 
Proceedings of the North Carolina Academy of Science 44 
The San Jose Scale. — Franklin Sherman , Jr 52 
Monazite and Monazite Mining in the Carolinas. — Joseph 
Hyde Pratt and Douglas B. Sterrett 61 
The Optical Rotation of Spirits of Turpentine. — Chas. 
H. Herty 87 
The Character of the Compound Formed by the Addition 
of Ammonia to Ei'iiyl-phospho-platino-chloride. — Chas. 
H. Herty and R. 0. E. Davis 92 
The Volatile Otl of Pinus Serotina. — Chas. II. Herty and 
W. S. Dickson 101 
Micropegmatite at Chapel Hill. — H. N. Eaton 101 
Abstracts 106 
The Amanitas of North Carolina. — II. C . Beardslee 115 
Investigations of the N. C. Geological and Economic Sur- 
vey Relating to Forestry Problems Along the North 
Carolina Banks.— Joseph Hyde Pratt 125 
Streptococcus Infections of the Tonsils, their Diagnosis 
and Relationship to Acute Articular Rheumatism. — 
Wm. DeB. MacNider 139 
The “Pinch-Effect” in Unidirectional Electric Sparks. — 
Andrew II . Patterson 145 
The Recent Baltimore Meetings of Scientific Societies 148 
