PT - JOURNAL ARTICLE AU - Young, C. A. TI - Note on the use of a diffraction "grating" as a substitute for the train of prisms in a solar spectroscope AID - 10.2475/ajs.s3-5.30.472 DP - 1873 Jun 01 TA - American Journal of Science PG - 472--484 VI - s3-5 IP - 30 4099 - http://www.ajsonline.org/content/s3-5/30/472.short 4100 - http://www.ajsonline.org/content/s3-5/30/472.full SO - Am J Sci1873 Jun 01; s3-5