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March 1, 1902


JAMA. 1902;XXXVIII(9):566-569. doi:10.1001/jama.1902.62480090018001f

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  1. Original form, described in Helmholtz's monograph "Beschreibung eines Augenspiegels, etc., Berlin, 1851." Formerly in the possession of Albrecht von Graefe. See Plate I, No. 1. Loaned by Dr. Harry Friedenwald, Baltimore, Md.

  2. Similar. Angle of glass plates 25°. Formerly belonged to Dr. Julian J. Chisholm. Loaned by Drs. Herbert Harlan and F. M. Chisolm, Baltimore, Md. See Plate I, Fig. 12.

  3. Similar to 1. Angle of glass plates 30°. Presented in 1853 by Dr. Eduard Jaeger, of Vienna, to Dr. John Brinton, and in 1870 by the latter to Dr. Wm. Thomson, of Philadelphia. See Plate I, Fig. 49. Loaned by Dr. Thomson, through Messrs. Bonschur & Holmes, Philadelphia.

  4. Modification. The lenses are inserted in a slit at the side. See Plate I, Fig. 41. Sent to Dr. John H. Dix, of Boston, by Prof. Sichel, of Paris. Loaned through kindness of Dr. B. Joy Jeffries, Boston.

  5. Similar to 4.

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