26o 



INDEX. 



PACE 



Declination of the sun lxvi, 3 14 



Defforges, <■'. E., work cited xxxv 



Degree, length of, at different latitudes, 



of meridian lxiv, 201 



of any parallel -lxiv, 202 



interconversion of Absolute, Centigrade, 



Fahrenheit, and Reaumur xii-xiii, 2-4 



Density of air Ixix, Ixx, 220-228 



Depth "i watei corresponding to weight of snow or 



rain lxii, 194-195 



Determination of heights by barometer, 



I lynamic xliv-xlviii, 145-154 



English xli-xliv, 134-143 



Metric xliv-xlvii, 144-154 



Babinet's formula for xlix-1, 157 



Dct 1 «'in I . iviii 



vapor i'ir mi 1 "i responding to, 



English lix, 172-182 



Metrii Ix, 186-191 



Differences, in height, corresponding to changes in 

 barometer, 



English xlviii, 155 



Metric xlix, 156 



Differences, 



Centigrade to Fahrenheit xv, 13 



Fahrenheit to Centigrade xiv, 13 



Duration of, 



astronomical twilight lxvii, 215 



civil twilight lxvii, 216 



sunshine Ixv, 203-214 



Dyne Ixiii 



El, value of the, 48 



Espy, work cited Iviii 



Expansion, coefficient of, for air, with temperature 



xxxix, xli 



Fahrenheit, conversion into Approximate Absolute, 

 I entigrade, and Reaumur xii, 2-4 



conversion into Centigrade xiii, 5-9 



differe to different es I entigrade. , .xiv. 13 



Fathom, Swedish, value "f •. 48 



Feet , cm version into meters xix, 40-41 



per second into miles per hour xxiv, 65 



Fcrrel, Wm„ treatise cited. . xxvii, ,\li, xliii, lxvii, l.wiii 



to..! . \ alue «'f. for different nationalities , |S 



Formula, Babinet 's barometric xlix 1, 157 



gradient winds xxvii xxix, 77-79 



Lambert's, wind direction xxv-xxvii, 71-76 



Laplace's barometric xxxix 



vapor pressure, 

 over ice 



English lii lv, h>o 



Metric lii-lv, 165 



over water, 



English lii lv, 161-164 



M,t 1 ic lii lv, 166-168 



from psychrometric readings, 



English Ivii lx, 172-182 



Metric Ivii Ixi, [86 101 



Fowle, F. E., treatise cited Ixxi 



Geodeticol tables lxhi-lxix, 198-218 



t iradient w inds, 



1 oglish xxvii-xxix, 77-78 



Metric xxvii xxix, 78-79 



(".rains, conversion into grams xxiii, 6] 



Grams, conversion into grains xxiii, xxiv, 62 



Gravity, standard, defined xxxv 



correction of, for variation with altitude XXX\ 



to standard XXXV XXXVJ 



reduction ol barometric readings to standard 



EXXvi xxxviii, 129-133 

 relative acceleration in different latitudes 



Ixiii, 100-200 



value of, tit sea level Ixiii. 198 



Guyot, A., treatise cited xxxii 



Hann, J., treatise cited xli. Ixi, bed 



Hazen, 11. A., treatise cited xxiv, xxvi 



Height, determination of, 

 by barometer. 



Dynamic xliv-xlvU, 145-154 



English xli-xliv, 134-143 



Metric xliv-xlvii, 144-154 



thermonietrical measurement of 1-li, 158 



Denning, F., treatise cited lii-liii 



Efeuse, VV.. treatise cited lii 



Holborn, L., treatise cited lij 



Hours, conversion into decimals of a day xxi, 56 



minutes and seconds into decimals of xxi, 57 



Humidity, 



correction for, in determining heights by baro- 

 meter, 



I lj namic xlvi-xlvii, 152 



English xliii-xliv, 142 



Metric xlvi-xlvii, 149-151 



relative, 



Fahrenheit lx, 183-185 



Centigrade Ixi, 192-193 



term for, in determining density of air, 



English Ixx, 221-223 



Metric Ixx, 225-228 



Hygrometrical tables lii ixiii, 160-195 



Hypsometric formula xxxix 



ii\ psometry xxxix lii, 134-158 



Illumination intensities, relative Ixix, 218 



Inches, barometric, conversion into millibars 



xviii, 36-37 



Inches, conversion into millimeters xvii, 16-22 



Infra-red spectrum, absorption by water vapor bauds 



in Ixxi, 230 



Interconversion, nautical and statute miles xx, 48 



sidereal and solar time xxii, 58 



International c loud classification lxxii, 234 



international meteorological symbols Ixxi, 232-233 



Juhlin, T. T., work cited. 



lii 



Kelvin, Lord, work cited xi 



Kilogram prototype xxiii 



Kilograms, conversion into pounds xxiii, 61 



Kilometers, into miles xix, 46-47 



per hour into meters per second xxiv, 69 



Kimball, Herbert II.. works cited lxvi, Ixix 



Klafter, \\ ienei , value of 48 



Lambert's formula, mean wind direction. .xxv-xxvi, 71-76 



Laplace, formula of xxxix 



Latitude, correction for, in determining heights by 



the barometer, 



English xxxvii xxxviii, xliii, 140-141 



Metric xxxvii-xxxviii, >.lvii, 153 



in reducing barometer to standard gravity, 



English xxxvii xxxviii, 130-131 



Metric xxxvii xxxviii, 132-133 



I. educe. S A . , work cited xviii, xli 



Length, art of meridian lxiv, 201 



arc of parallel lxiv, 202 



continental measures of, with metric and 



British eouh alents xx, 48 



Libbey, Wm , work cited Ixv 



Line, old French, value of 48 



Linear measures xvi, 16-48 



Marks, L. S. , work cited Ivi 



Marvin. (.'. 1 . , work cited xviii, xxxi, lii 



Maxwell, work cited ,.' v " 



Mean time, conversion of solar into sidereal xxii, 58 



at apparent noon xxii, 57 



Measures of angle xx-xxi, 50-55 



of length xx, 48 



of time xx-xxiii, 50-58 



Mercury, density of xviii 



Meridian, arcs of terrestrial _. . lxiv 



lengt h of a degree lxiv, 201 



Meteorological stations, list of lxxii, 237-257 



Meter xix 



Meters, conversion into feet xix, \3 \3 



per second into kilometers lK-r hour xxiv, 68 



per second into miles per hour xxiv, 66 



Mile, different values for ._ 48 



Miles, conversion into kilometers xix, 44-45 



per hour into feet per second xxiv, 65 



kilometers per hour xxiv, 64 



meters per second xxiv, 67 



Millimeters, conversion into inches xyii, 23-35 



(barometric I, into millibars xviii, 38-39 



Minutes of time, into arc xx, 51 



into decimals of a day xxi, 56 



into decimals of an hour xxi, 57 



