A Contribution to the Herpetology of Northern Pakistan: The Amphibians and Reptiles of Margalla Hills National Park and surroundings regions Falconer's observations of the evolutionary

Falconer's observations of the evolutionary history preserved in the Siwalik strata--long periods of stasis followed by short periods of rapid change--led him to introduce the evolutionary theory known as punctuated equilibrium

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James Ellis Humphrey (1861-1897) was an American botanist and mycologist graduated from Harvard University

This is Bulletin of the United States National Museum

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A Contribution to the Herpetology of Northern Pakistan: The Amphibians and Reptiles of Margalla Hills National Park and surroundings regions Falconer's observations of the evolutionaryPp. 217; 3 color base maps, 109 color photos of habitats, reptiles and amphibians, 42 color distribution maps. Original green cloth lettered in gilt on the spine, color pictorial dust jacket lettered in black on the spine and in red on the front cover, 8vo. Simultaneously published by Edition Chimaira in Frankfurt Germany. The total edition was limited to 500 copies. This book on the herpetology of Northern Pakistan is built around an intensive, 7