Huyghenian

~ -- Those known as the Huyghenian oculars (Fig. 48) will be sufficient for all ordinary work without resorting to the more expensive "compensation" oculars.

The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged.

Some makers mount the glass disc together with a circular cover-glass in such a way that when placed in position in any Huyghenian eyepiece of their own manufacture, the scale is exactly in focus for normal vision.

The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged.

Dissertation: New Positions of the Stars in the Huyghenian Region of the Great Nebula of Orion, from observations made at the Leander

University of Virginia Record 1911

Dissertation — A Photometric Survey of the Huyghenian

University of Virginia Record 1913

Dissertation — "A Photometric Survey of the Huyghenian Region of the Great Nebula of Orion."

University of Virginia Record 1914

Dissertation: New Positions of the Stars in the Huyghenian

University of Virginia Record 1910

Observations of stars in the Huyghenian region of the Nebula of Orion — 459 Micrometric measurements of position during the year ending March 1, 1909 — 408 ditto during the year ending March 1, 1910 — 232 photometric determinations of brightness during the year ending March 1, 1911 — 2.

Board of Visitors minutes 1911