It has been seen that the parallaxes afford little information as to the distribution of the main bulk of the stars and that the chief evidence on this point must be obtained indirectly from their proper motions.
Although some lurking errors impaired the authority of the concluded parallaxes this work ranks as a valuable contribution to astronomy, since it showed the possibility of employing photography in such delicate investigations.
Brinkley's imaginary star-parallaxes (Phil.
For stellar parallaxes see Star; the solar parallax is discussed below.
Cassini's new method of parallaxes was inserted in the Ada Eruditorum of Leipzig in 1685.