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1893.] Proceedings of Scientific Societies. 189 
Determination of Humus in Soils, H. A. Huston and F. W. McBride ; 
Experiments with and Phenomena of Vacuum Tubes, R. A. Fessen- 
den; The Extraction of Xylan from Straw in the Manufacture of 
Paper, W. E. Stone and W. H. Test; The Electro-magnetic Inertia of 
a Large Magnet, Thos. Gray; The Determination of Chlorine in Nat- 
ural Waters, W. A. Noyes; Some New Electrical Apparatus, R. A. 
Fessenden ; Thiofurfurol and its Condensation Products, W. E. Stone 
and Clinton Dickson ; On the Construction and Use of a Bolometer, 
B. W. Snow; On the Determination of Valence, P. S. Baker; An 
Application of Mathematics in Botany, Katharine E. Golden; On 
the Fertilization and Development of the Embryo in Senecio aureus, 
D. M. Mottier; Distribution of the North American Cactacee (by 
title), John M. Coulter; Marchantia polymorpha, not a Typical or 
Representative Liver-wort, L. M. Underwood; Notes Concerning 
Certain Plants of the Southwestern Counties of Indiana, John S. 
Wright; Spines and Epidermis of the Cactaceæ (by title), E. B. 
Uline ; Preliminary Notes on the Genus Cactus, E. M. Fisher; An 
Auxanometer for the Registration of Growth of Stems in Thickness, 
Katharine E. Golden; The Apical Growth of the Thallus of Fucus 
vesiculosus, D. M. Mottier ; Symbiosis of Orchidaceæ, M. B. Thomas; 
Notes on Pediastrum, W. L. Bray; The Genus Corallorhiza, M. B. 
Thomas; Notes on Root Tubercles of Indigenous and Exogenous 
Legumes in Virgin Soil of the Northwest (by title), H. L. Bolley ; 
Notes on Archeology in Mexico, J. T. Scovell ; Notes on the loss of 
the Vomerine Teeth with Age in the Males of the Salamander, 
Desmognathus fusca (by title), F. C. Test: Modern Geographical Dis- 
‘tribution of Insects in Indiana (by title), F. M. Webster; New Species 
of Indiana Hymenoptera, reared at LaFayette, Ind. (by title), F. M. 
Webster; Description and Elevation of Mount Orizaba, J. T. Scovell: 
The Climate and Glaciers of Mounts Orizaba and Popocatapetl, J. 
T. Scovell; A Mite, Probably Hypoderas columbe, Parasitic in the 
Pigeon, W. W. Norman; The Locustide of Indiana with Description 
of New Species, W. S. Blatchley ; Early Stages in, the Development 
of Cymatogaster, C. H. Eigenmann ; Some Remarks Regarding the 
Embryology of Amphiuma, O. P. Hay ; Some Structural Peculiarities 
of Pacific Slope Fishes (by title), A. B. Ulrey ; Peculiar Death of an 
Oriole (by title), T. B. Redding ; The Range of the American Cross- 
bill (Loxia curvirostra minor) in the Ohio Valley, with Notes on its 
Unusual Occurrence in Summer, A. W. Butler; A Note on Loria 
curvirostra, W. S. Blatchley ; Notice of a Terrapin to be Restored to 
the Fauna of Indiana, O. P. Hay; A Migration of Birds and one of 
Insects, T. B. Redding: The South American Catfishes Belonging to 
