Miscellaneous Intelligence. 329 
Ep@ar chamamel Orbit of the great some of “i 
J. K. Rexs: Observations on ad “ a made at y secre College, 
New York City: Description of n sie tory wr Columbia Colle: 
Woopwarpb: Descriptive ‘geometry aoalie to the general allipeota, 
: Wess:. Conic sections in Ceeucibive geometry; Descriptive geomet- 
tical treatment of surfaces of the second — ; The kinematics of rotary pumps, 
C. A. Young: Some observations on 8. 
D. P. Topp: acrncinieg of observing soliness s of Jupiter’s satelli 
SaMveL Emerson: Standard time-pointer and a time  pomre “aia; System of 
igebraic geometry. 
J. M. BATCHELDER: Tidal observations on soundings distant from shore. 
Section B, Physics. 
W. A. Rogers: Definiti cara of the relation: Imperial yard 
+3°37030— a meter of the archiv 
eg Morse: On the tials tins of the Sun’s rays for warming and ventilating 
me 
8. Can : The magnetophone, or begs modification of the magnetic field 
ah the rotation of a a metallic dis 
Dou : The static telephone. 
r E. sang cares survey of Missouri; Plan for a state weather service. 
at T. C. Menpennaty: A method of dist toating weather forecasts by means of 
ways. 
P. R. Hort: The tornado at es May 18, 1883. 
J. H. Frick: The tornado o 
C. Itts: Ona capi for 
discoveries rece by it 
. T. Eppy: On the "einetie theory of the specific heat of solids; a kinetic 
theory “mh f melting and boiling; An extension of the theorem of the virial to rotary 
oscillat: 
r : A method for the calibration of a galvanometer; A method of 
ety the ¢ center of gravity of a mass; Two forms of apparatus for Boyle’s 
law; A new he iostat. 
— Hart: Natural snow-balls or snow roller 
Gustavus fancier Remarks on the tracings of self- re nagen instruments 
and “a sitted of the S. S. indications for Iowa in June ied July, 1883. 
sche Serine cell, and some remarkable electrical 
Section C, Chemistry. 
R. B. Warper: Suggestions for computing the speed of chemical reactions. — 
oc W. ppmoges and ©, K. McGee: On the sub-aqneous dissociation of certain 
OC. F. Mapery and H. H. Ss ~aaggaccl On gamma-dichlordibromopropionic and 
gamma-dichlorbromacryli¢ a 
MaBery and Ra sono qe On the formation and constitution of chlor- 
dibromacrylic aci 
- Ma at and G. M. Patmer: On drama rao ag acid. 
Witzy: American patton and their adulteratio 
no Ricnanns0¥: The composition of American whois and corn; Sotol, 
Makes: a pn 
E. poe — months of lysimeter record at the New York Agri- 
cultural Experiment Statio 
W. H. Szamen: New are of burettes. 
C. Lzo Megs: Estimation of carbon and nitrogen in organic compounds. 
Section D, Mechanical Science. 
ak A. Rogers: A method of testing long plane —_— applicable to the 
igoment of planer-beds, lathe- beds, heavy shafting, ete 
. H. Taursron: The c omar and dynamic efficiencies of the steam-engine 
Centrifugal action in turbine 
2la 
