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Excerpt from The Variation and Correlations of Certain Taxonomic Characters of GryllusDe Saussure, one of the foremost taxonomists of the genus, gave up sharply defining the limits of his own species.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digit...

Excerpt from Notes on the Distribution and Bibliography of North American Bees of the Families, Apidæ, Meliponidæ, Bombidæ, Euglossidæ, and AnthophoridæDistribution is not merely spatial, distribution in time is also important. For that reason we have, for the most part, included the months (indicated by Roman numerals) in which adults were found and.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. ...

Excerpt from Field Book of Insects: With Special Reference to Those of Northeastern United States, Aiming to Answer Common QuestionsI am glad to have this opportunity of thanking those who have kindly responded to the request made on page 523 for criticisms and suggestions. As far as seemed practicable, they have been acted upon in this edition. All typographical errors that have been noticed in the body of the book are now corrected and new m...

Excerpt from Anthropological Papers of the American Museum of Natural History, Vol. 12: Part 1: String-Figures From the Patomana Indians of British GuianaOpening A consists in placing the string in Position 1 and taking up the palmar string of the left hand from the proximal side on the dorsum of the right index finger. Then reach between the strings of the right index loop thus formed and take up the palmar string of the right hand from the p...

Excerpt from Experiments With Drosophila Ampelophila Concerning EvolutionIn this paper only those families are considered which are in or close to the main line of descent. I have not thought it worth while to include any families having less than 40 Offspring unless they were in this main line. Typical data are given in table 36, page 31. I have tried to arrange these so that they will be available for further work by those interested. They s...

Trieste Publishing has a massive catalogue of classic book titles. Our aim is to provide readers with the highest quality reproductions of fiction and non-fiction literature that has stood the test of time. The many thousands of books in our collection have been sourced from libraries and private collections around the world.The titles that Trieste Publishing has chosen to be part of the collection have been scanned to simulate the original. O...

Excerpt from The Variation and Correlations of Certain Taxonomic Characters of Gryllus I wish also to thank, at this time, those who have helped me to secure data. That part of these data which is used in the present discussion, together with the constants calculated from them, are given in the Appendix. Unless otherwise stated all the measurements are from mature females. I. The Taxonomy of Gryllus Native to Eastern States. De Vries (1904)...

Excerpt from Experiments With Drosophila Ampelophila Concerning EvolutionIn this paper only those families are considered which are in or close to the main line of descent. I have not thought it worth while to include any families having less than 40 Offspring unless they were in this main line. Typical data are given in table 36, page 31. I have tried to arrange these so that they will be available for further work by those interested. They s...

Excerpt from Anthropological Papers of the American Museum of Natural History, Vol. 12: Part 1: String-Figures From the Patomana Indians of British GuianaOpening A consists in placing the string in Position 1 and taking up the palmar string of the left hand from the proximal side on the dorsum of the right index finger. Then reach between the strings of the right index loop thus formed and take up the palmar string of the right hand from the p...