...latter with the powerful spectroscope kindly lent by Mr. Spottiswoode. 1 " One hundred and twenty-six measures have been made of the displacement of the F line in the spectra of 20 stars as compared with hydrogen, 15 of the displacement of the b lines in the spectra...

...photographic reductions having pressed very severely on the spectroscopic assistant during the long couFor. the determination of motions of stars in the line...have been made of the displacement of the F line in the spectra of 47 stars, and 72 measures of the k lines in 14 s.ars, besides measures of the displacements...

...proportion of days on which the chromosphere could be satisfactorily examined. One hundred and thirteen measures have been made of the displacement of the F line in the spectra of 20 stars as compared with that of hydrogen ; and 92 measures of the displacement of...

...in the spectra of several spots. For the determination of motions of stars in the lire of sight, 168 measures have been made of the displacement of the F line in the spectra of 43 stars, £7 of the ó¡ line in 27 stars, and 8 of the ¿4 line in 4 of these stars....

...(except some very faint lines), have also been subsequently remarked in the spectra of several spots. For the determination of motions of stars in the line of sight, 1 68 measures have been made of the displacement of the F line in the spectra of 43 stars, 87 of the...

...lines in the same region of the spectrum to which there is nothing corresponding in the solar spectrum. For the determination of motions of stars in the line of sight, 177 measures have been made of the displacement of the F line in the spectra of 41 stars, 68 of the...

...F line. As regards determinations of motion of stars in the line of sight, a hundred and forty-two measures have been made of the displacement of the F line in the spectra of twenty-three stars, and twenty-six measures of the line 6, in nine stars. The observations...

...F line. As regards determinations of motion of stars in the line of sight, a hundred and forty-two measures have been made of the displacement of the F line in the spectra of twenty-three stars, and twenty-six measures of the line 6, in nine stars. The observations...

...displacement of the F line. As regards the determination of motions of stars in the line of sight, 142 measures have been made of the displacement of the F line in the spectra of 23 stars, and 26 measures of the 6, line in 9 stars. The observations of Sirius during...

...F line. As regards determinations of motion of stars in the line of sight, a hundred and forty-two measures have been made of the displacement of the F line in the spectra of twenty-three stars, and twenty-six measures of the line 6, in nine stars. The observations...