Latitude ranges, 
mean atmospheric pressure for, 4 
and extreme values of, 4 
Lerwick, 9, 10 
Lightning, frequency of days on which 
observed by groups, 57 
Log, abstract of, 63 
Lowest daily mean pressure, 4 
M 
Mangarewa, 9 
Marianas Islands, 
Guam, 38, 72, 73 
Mauritius, 9, 25 
Maxima of pressure, 4 
Maxima and minima, 
of air temperature, 18 
of relative humidity, 46 
absolute maximum and mini- 
mum, 46 
of sea-surface temperature, 29 
of vapor pressure, 41 
Maximum amplitude, time of, 11 
Maximum of pressure, absolute, 4 
Maximum and minimum sea-surface 
temperatures and hours of 
occurrence, 30 
Maximum sea-surface temperature on 
clear days, 33, 34 
Minima, of pressure, 4 
Minimum, of pressure, absolute, 4 
Minimum sea-surface temperature, 32 
Mean 
air temperatures for groups, 7 
daily maximum and minimum, 
19 
atmospheric pressure, 
for latitude ranges, 4 
and extreme values, 4 
cloudiness, 
for groups, 58 
for ranges in latitude, 58 
relative humidity, 
maximum and minimum, for 
groups, 48 
unperiodic diurnal amplitude 
of, for ranges in lati- 
tude, 49 
sea-surface temperatures, 
daily maximum and minimum, 
by groups, 30 
for groups, 27 
corrected for noncyclic 
change, 27 
vapor pressure, 
hourly values of, for groups, 
40, 41 
maximum and minimum, 42 
unperiodic diurnal amplitude 
of, 43 
Mercurial 
barometer, 2 
thermometer, 13 
Mercury, “‘pumping”’ of, 2 
Meteor Expedition, 25 
Meteor, unusual, 68 
Meteorological 
phenomena, miscellaneous, 55 
program of the Carnegie, 55 
screen, 13 
Bergensijord, 13 
Pangani, 13 
Stevenson type, 13 
Michael Sars, 45 
Monthly distribution, number of days, 
atmospheric-pressure observa- 
tions within each latitude range, 9 
INDEX 
N 
Negretti-Zambra 
capillary ventilating recording 
psychrometer, 13, 39 
Stevenson screen, 39 
Netherlands East Indies, 21, 35 
Newfoundland, 38 
Noncyclic changes, 21, 32 
Normal values of atmospheric pres- 
sure, 3 
rome eeD with Carnegie values, 
regional, departures from, 3 
Novara, 8 
Nova Scotia, 38 

oO 
Observational errors, sources of, 52 
Observational work, 1 
Observed amplitudes, cg, and com- 
puted, of 12-hour waves of at- 
mospheric pressure at sea, 9 
Objectives of seventh cruise of Car- 
negie, 58 
Optical phenomena, 58 
Oscillations, diurnal pressure, 6 
Oyashio Current, 17, 38 
P 
Pacific Ocean, 
North, sea-surface temperatures 
in, 38 
South, pressures over, 3 
Pago Pago, 71, 72, 77, 79 
Panama, Gulf of, 41 
Paul, J. H., 2, 52 
Paulin type aneroid barometer, 2 
Periodic amplitude of sea-surface 
temperature, 
on calm days, 33 
on windy days, 33 
Periodic daily amplitude of atmos- 
pheric pressure, 4, 6 
Peru, 
Coastal, 17 
Callao, 17, 18, 40, 68, 70 
Peruvian Current, 18, 35 
Phases of 12-hour waves of atmos- 
pheric pressure over South Pa- 
cific Ocean, 11 
Plymouth, 64 
Potsdam, 7, 25 
Precipitation, 52 
Pressure, 
absolute maximum, 4 
absolute minimum, 4 
departure from normal regional 
values of, 3 
highest daily mean, 4 
oscillations, diurnal, 6 
San Francisco to Apia, 3 
South Pacific Ocean, 3 
Psychrograms, 
evaluation of, 39 
corrections to, 39 
Psychrometer, 
Assmann, 13, 14, 39, 52 
Hartmann and Braun Electrical- 
resistance, 39 
Negretti-Zambra capillary venti- 
lating recording, 13, 39 
Psychrometric observations, 39 
167 
R 
Rainfall, 55 
diurnal variation for groups, 57 
frequencies of days on which oc- 
curred for groups, 57 
number of days on which occurred 
for ranges in latitude, 57 
Rain gage, standard, 52 
peat ro to future expeditions, 
9 
Regional variations in sea-surface 
temperatures, 37 
Relative humidity, 
seers ria and minimum, 
for groups, 48 
diurnal amplitude of, 
effect of wind on, 49 
frequency distribution of un- 
periodic, 49 
mean unperiodic, for ranges 
in latitude, 49 
variation with latitude, 49 
diurnal variation of, for days, 48 
Fourier analysis of diurnal vari- 
ation of, 50 
frequencies of hours of minimum, 
harmonic analysis of data, 49 
hourly qalucs of, for groups, 46, 
maxima and minima of, 46 
mean, for groups, 46 
mean maximum and minimum, 
for groups, 48 
hour of, 48 
variation of, 
with differences between sea- 
oa air-temperature, 
with latitude, 51 
with sea- and air-tempera- 
ture differences, 50 
Reversing thermometers, 27 
Ss 
Saida, 8 
Salinity bridge, 52 
Samoa, 9, 10, 29 
Apia, 2, 72 
Pago Pago, 71, 72, 77, 79 
San Francisco, 38, 74, 76 
to Apia, pressures, 3 
Sargasso Sea, 38 
Saturation deficit, 51 
Screen, Stevenson, 24 
Sea- and air-temperature, 33 
differences, 34 
diurnal variation of, 35 
differences between, 36 
variation ot, 
vapor pressure with, 45 
with relative humidity, 50 
Sea, state of the, 55 
Sea-surface temperature, 27 
absolute maximum, 29 
by groups, 30 
absolute minimum, 29 
by groups, 30 
Atlantic Ocean, North, 38 
departures from normal values, 28 
diurnal amplitude, variation with 
latitude, 32 
diurnal variation, 31 
effect of cloudiness on, 32 
effect of state of sea on, 32 
