INDEX TO VOLUMES I-X. 
161 
Page. 
Oceaiiograpliy, List of papers on—Cont’d. 
[letter on changes of sea-level at Ber¬ 
muda.] J. H. Lefroy. Communicated hy 
J. Henry. N.o abstract.. ...i 75 
on the tides of the Bay of Fundy. Mr. 
Ramsay. Communicated hy J. J.Wood- 
ward. Title only .i 94 
Sumner’s method in navigation. J. H. C. 
Coffin. In full . ii 105 
the navy compass. B. F. Greene. Title 
only .44 123 
an adjustable binnacle for the correction 
of a ship’s compass. B. F. Greene. 
Title only .4i 134 
optical salinometer. J. E. Hilgard. Ab¬ 
stract .41 185 
temperatures of the Pacific Oeean. T. 
Antisell. Abstract .41 192 
the deep sea dredgings in the Gul f of Mex¬ 
ico and the West Indies in 1873-1878, 
by Professors Louis and Alexander 
Ag.assiz and the officers of the U. S. 
Coast Survey. W. H. Dali. Title only, 
111 45 
on Siemens’ deep sea thermometer and 
Carry’s ice machine. 
J. E. Hilgard. 
Title only . 
. V 100 
some eccentricities of ocean currents. A. 
B. Johnson. Abstract. 
.vii 
14 
historical sketch of deep sea temperature 
observations. J. H. 
Kidder. Title 
only . 
.lx 
14 
Odor, Theory of.. 
27 
Office, Rotation in. 
49 
Officers, Duties of. (See Standing Rules.) 
for 1871. 
.1 
20 
1872. 
. 1 32, 
,33 
1873. 
.1 
64 
1 R74 . 
.1 
91 
1875 . 
.11 
16 
1876 . 
, 84 
1877 . 
...11 
86 
1878 ..... 
. .11 161 
1879 .. 
.ill 
17 
1880 . 
.ill 51 , 53, 
151 
1881 . 
.iv 
30 
1882.V 14, 85, 112 
1884. 
.vl XV, vil xiv, 36, 85 
1885. 
.vii XV, viii xiv, 36 
1886. 
..viii XV, lx xiv, 52 
1887 .. 
.lx XV, X xiv, 82 
1888. 
of the Army and Navy as scientific admin¬ 
istrators.4x xlix 
11 
Page. 
Ogden, H. G., communication on What is to¬ 
pography? Abstract .x 15 
Oil-immersion objectives.. Ill 25 
Oldberg, R., The Flora Columbiana of.Iv 05 
Omaha Indians, Gentile system of..Ill 128 
Omar Cheyam, Calendar proposed by.11 38 
Onatsevich, Lt. M. S., Co ordinates of Plover 
Bay by.4v 128 
Ontario Basin, Changes of level in.lx 8 
Ophthalmology. (See Optics.) 
Optical salinometer.11 185 
Optics, List of papers on (see also Micros¬ 
copy) : 
on a new method for detecting and 
measuring the optical defects of the 
eye. W. Thomson. Reference .1 22 
on achromatic obj^-ct glasses. R. Keith. 
Title only ..1 73 
[exhibition of spectra and spectroscopes.] 
J. J. Woodward. No abstract .1 89 
half-vision. J. Henry. Title only .11 GO 
the markings on Navieula rhomboides. J. 
J. Woodward. Title only .11 69 
the color corrections of achromatic object¬ 
ives. W. Harkness. Abstract .Ill 39 
a thermodynamic theory of the speetrum. 
S. Newcomb. Title only .Ill 41, 43 
some apparatus recently brought into use 
by the medical department of the 
Army for the examination of the eye. 
J. J. Woodward. Abstract .Ill 53 
the number of lenses required in an ach¬ 
romatic objective, consisting of infi¬ 
nitely thin lenses in contact, in order 
that, with any given law of dispersion 
whatever, the greatest possible num¬ 
ber of light-rays of diflferent degrees 
of refrangibility may be brought to a 
common focus. W. Harkness. In 
full ...65 
tlie modifications suffered by light in pass¬ 
ing through a very narrow slit. A. A. 
Miehelson. Abstract .ill 119 
color perception and color blindness. S. 
IM. Burnett. Abstract and reference, 
iv 54 
refraction in the principal meridians of a 
triaxial ellipsoid, regular astigmatism 
and cylindrical lenses. R. M. Burnett. 
Reference .vi 4 
the monochromatic aberration of the 
human eye in aphakia. W. Harkness. 
Reference .vi 5 
the character of the focal lines in astig¬ 
matism. S. M. Burnett. Abstract, 
vi 45 
