Sentence Examples with the word Alvan

C. Ord (1867), Alvan C. Gillem (1868) and Irvin McDowell (June-July 1868), and by Gillem (1868-1869) and Adelbert Ames (1869-1870).

Instruments have been invented by Alvan Clark and Sir Howard Grubb for measuring with the spider-line micrometer angles which are larger than the field of view of the eyepiece.