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Variation of Birds in a State of Nature by Frank Russell, 1892

Variation of Birds in a State of Nature by Frank Russell, 1892, Page 2

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Contents I. Introductory II. General View of Variation III. Discussion of Species 1 - Habit 2 - Distribution 3 - Socality, variation for sex, season, etc. 4 - Variation in a. Length b. Extent c. Wing d. Tail e. Tarsus f. Middle Tov. g. Hind Tov. h. Length of Culmen i. Depth of Culmen 5 - Discussions of Dot and Plotting Paper Diagrams IV - Comparison of the Five Species V - Conclusions VI - First Series of Measurements VII - Second Series VIII - Dot Diagrams IX - Maximum and Minimum Diagrams X - Plotting Paper Diagrams 19590
 
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