ee 
168 
Page 
Transit of Venus..........0.+ seupnysb Wey speeeiaessmetnpent 21 
Treasurer’s annual report...........ecereseereeeeees xxij 
— accounts for 1882, Report of Auditing 
COMMIttSe ON the......diecscccovcccedevaccssncsves 5 
Unification of longitudes and time.............+. 106 
Units of force and energy, including electric 
units 
Universal time.... 
Velocity of sound as a measure of air tem- 
PEVRUUTEG \. cvess,sier sete edsa0e6 47 
Venus, Transit of. 21 
Volcanic problem, The, stated.........sccsccsseseee 87 
Walcott, C. D.: communication on The Cam- 
brian system in the United States and 
PHILOSOPHICAL SOCIETY OF WASHINGTON. 
Page 
Cop Sey: oF talus eee anes MMR. cctl Eh ees 98 
— — —, Election to membership Of............. 48 
Walling, H. F.: communication on Topo- 
graphical indications of a fault near Har- 
PON'S POLTY: .iocssecasscacessadonseesbapnastsnueadnaeene 30 
— — —, Election to membership of............ 14 
Ward, L. F.: remarks on Dismal Swamp...... 30 
Water, a factor in voleanie eruption.............. 87 
White, C. A.: remarks on the drainage sys- 
teams iOf Towa so.<st.iesvaceecnsreand Srrenitoy 97 
——-—--—-— instability of continents.... 93 
Williams, Albert, Jr., Election to member- 
BIR’ Of... onecesesoseecntvssnavasasosiarasesangeaenneen . i4 
Woodward, R. S.: communication on the 
Special treatment of certain forms of ob- 
servation-equations 
— — —, Election to membership of...... 
15€ 
lll 
