INDEX TO VOLUMES I-X. 
Page. 
Oceanography, List of papers on—Cont’d. 
[letter on changes of sea-level at Ber- 
muda.] J.H. Lefroy. Communicated by 
 ELENTYs | VO) COBINGCU 0. .ctss0snccnnscnssnene a 75 
on the tides of the Bay of Fundy. Mr. 
Ramsay. Communicated by J. J.Wood- 
WOOT. P TREE ONUY <...0..5500cevoserccosursssoannc A 94 
Sumner’s method in navigation. J. H.C. 
OEE g PIE IU Elasconessasssdnescccevsuncoss sesseon 44 105 
the navy compass. B. F. Greene. Title 
an adjustable binnacle for the correction 
of a ship’s compass. B. F. Greene. 
TUTPOGNoccctnosccaacsssasccs|seosescnseseoeecesnse ii 134 
optical salinometer. J. E. Hilgard. <Ab- 
BUMECUaasencadssesene sess sersSe neers Eearaauehs di 185 
temperatures of the Pacific Ozean. T. 
ADMISEMS ADSINACTi i. ..scnecssccocccccccecone ii 192 
the deepsea dredgings in the Gulf of Mex- 
ico and the West Indies in 1873-1878, 
by Professors Louis and Alexander 
Agassiz and the officers of the U.S. 
Coast Survey. W.H. Dall. Title only, 
iti 45 
on Siemens’ deep sea thermometer and 
Carré’s ice machine. J. E. Hilgard. 
Title OnM ef c...0scccececeee Sivcsasupviedaterssaussseces v 100 
some eccentricities of ocean currents. A. 
BS JORNSON. AGSENACL ccaceccsscccosseds vii 14 
historical sketch of deep sea temperature 
observations. J. H. Kidder. Title 
PO a erereonriserenaevvedt deepraseiccacnas-ser---usesace ix 14 
Odor, Theory of....... osavenescsbatecvecasgu: cecetes vill 27 
Office, Rotation in..........cecceeseee aaencastesuantecnt v 49 
Officers, Duties of. (See Standing Rules.) 
for 1871 
1872... 
v 14, 85, 112 
SES ries paces cusuavrssenessecevsianesst v 175, vi xiv, 41, 122 
Hispitacnsasecctnnccescececsnhcacseees vi xv, vii xiv, 36, 85 
of the Army and Navy as scientific admin- 
ISLLAON A se ocstseusaseuncudoas sn “esheosh nackeces ix xlix 
57 
161 
Page. 
Ogden, H.G., communication on What is to- 
POPTAUDY CAUSE UC laacscsecccccasceecvecceses x15 
Oil-immersion objectives... oa did 25 
Oldberg. R., The Flora Goremnbiana of .....iw 65 
Omaha Indians, Gentile system of............ iii 128 
Omar Cheyam, Calendar proposed by........ ii 38 
Onatsevich, Lt. M. S., Co-ordinates of Plover 
Biyp Dye. ceonarccmesneanecenarecossesesnscs sovsenast iv 128 
Ontario Basin, Changes of level in............ ix 8 
Ophthalmology. (See Optics.) 
Optical salinOmetercececectscsssectecckssecs acovcce ii 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............ i 22 
on achromatic object glasses. R. Keith. 
AWULE OT) Saasascacssosseusccssrsaesesessenecestorets i 73 
{exhibition of spectra and spectroscopes.] 
J.J.Woodward. Wo abstract............ i 89 
half-vision. J. Henry. Title only........... ii 60 
the markings on Navicularhomboides. J. 
J. Woodward. Title only..........c0.s00 li 69 
the color corrections of achromatic object- 
ives. W. Harkness. Abstract......... iii 39 
a thermodynamic theory of the speetrum. 
8. Newcomb. Title only............++ iii 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.............+. fii 53 
the number of lenses required in an ach- 
romatie 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 different degrees 
of refrangibility may be brought to a 
common focus. W. Harkness. Jn 
SUllvcconasecee wyewesssestscaverssnocassusnssscsoussssskil 6D 
the modificatious suffered by light in pass- 
ing through a very narrow slit. A. A. 
Michelson’, “ADStrAChcssencsctaccsacrecess iii 119 
color perception and color blindness. S. 
M. Burnett. Abstract and reference, 
iv 54 
refraction in the principal meridians of a 
triaxial ellipsoid, regular astigmatism 
and cylindrical lenses. §S. M. Burnett. 
PREPEPETICE ssceatessnaeccurs aceeepenardnioeecnons vi 4 
the monochromatic aberration of the 
human eye in aphakia. W. Harkness. 
FROLOTONEE ee cvacestcdcatteddeorenctscace erecta wi 5 
the character of the focal lines in astig- 
matism. S. M. Burnett. Abstract, 
wi 45 
