Record of Biological Observations, 1913, 1913-1919; 1921; 1936; 1938

Record of Biological Observations, 1913

Notebook started by James Hansen. No title. Spine: Record

P. 1: "This book was acquired for the purpose of recording biological observations of all kinds of probable interest or usefulness to (our opinons) other future biologists. J.H."

Entries from 1913 to 1927 by James Hansen. Continued in another hand in 1935 (Wendelin Luetmer). Two entries by "A.T." (Adelard Thuente?) in 1936, followed by an entry by Wendelin Luetmer in 1938. P. 394 is a list of microscopes assigned to students in 1936. James Hansen's entries include sketches.

Inserts:

Between pages 24 and 25: Smear Method for Pollen Mother Cells No. 1 / Permanent Aceto-Carmine Preparations: Buck's Method; Suggestions for improving root tip technique, page 4. First is possibly incomplete.

Between pages 26 and 27: An unsigned letter, perhaps a letter to the editor, about North Dakota botanist Dr. Joël Lunell. Supplementary to account in American Midland Naturalist 6:243-244, 1920. Copy to N.D. Historical Society.

Between pages 70 and 71: Bibliography of Evolution. Circa 1921.

Between pages 108 and 109: From Hay infusion. Sketch of Bodo species, by James Hansen, 1914.

Between pages 208 and 209: Historical Notes on Magnetism and Electricity; Bones of the Human Skeleton.

Between last unnumbered pages:

Three photographs of a lizard, black and white. One about 4.5 x 7. Smaller two are the same as each other, and about 3.25 x 5 inches. Microscopes key, undated. Is a list of microscopes assigned to students. Nerve cells, silver impregnation. Three methods. Microscopical Methods, August 8, 1916. Biology III: Demonstration of digestion by Enzyme-action--Higner, p. 170, October 18, 1915. Golgi's Silver Method, Durig's Modification, Lee p. 427. Handwritten in pen. Water-damaged. Has pencil sketch on back. Pelomyxa palustris Greeff? Pencil sketch by James Hansen, 1918. Nereis viridis. Pencil sketch by James Hansen, 1918. Mammalia. Notes on when some forms emerged, but primarily about color vision. Function of Nervous System. Three pages of notes, fastened with straight pin, 1916. Data for Nerve-lectures, 1916. Four pages of notes, fastened with paper clip. Includes chart of wavelengths corresponding to light, heat, sound, touch, radio, ultraviolet. Amoeba culture, 1917. Hand-written notes by James Hansen on experiment performed. Paper wrinkled. Color Vision. Handwritten notes by James Hansen, 1919. Color-blindness. Formulae for obtaining specified percentages in diluting or mixing given solutions. James Hansen, 1915. Salamander development. Three pages of notes based on observation of salamander eggs, 1912. [Formula to reduce a solution]. Given a 10% Potassium bichromate solution and 40% formaldehyde, to obtain a 3% Potassium bichromate solution in a 5% formaldehyde solution. James Hansen, 1915. [Formula to raise a solution]. Let P = per cent to be raised ... For instance raise 94 grams (?) of 10% formal. to 20% by adding 40% solution.