Pituophis catenifer pumilis, and Charina bottae umbratica) and has been recognized by his fellow herpetologists by having had 14 new taxa named after him (such as Chionactis occipitalis klauberi, Crotalus lepidus klauberi, Ensatina eschscholtzii klauberi, Hemidactylus klauberi, Hypsiglena torquata klauberi, Sauromalus klauberi, Sphaerodactylus klauberi, and Terrapene nelsoni klauberi ). He donated approximately 36,000 specimens to the San Diego Natural History Museum, and his extensive personal library and field notes were donated there upon his death. Klauber's rattlesnake collection, containing over 8,600 specimens, comprises the core of the museum's Herpetology Department collection; at over 9,300 rattlesnake specimens, it is one of the largest rattlesnake collections in the world. Mathematics In the early 1930s, Klauber proposed a geometric arrangement of primes not unlike Ulam's spiral. In 1932, Klauber presented a paper on a triangular, non-spiral matrix to the Mathematical Association of America demonstrating geometric regularity in the distribution of the primes. The lines of primes in the Klauber triangle meet at 60° angles, while in an Ulam Spiral, they meet at 90° angles. Klauber's interest in mathematics—and the extensive samples of rattlesnakes that he accumulated for study—led to his most significant contribution to herpetology, the application of statistical methods to aid in the classification of reptiles. He pioneered the use of quantitative analysis in herpetology to determine variation in snakes and to weight the differences between species and subspecies. Patents Society memberships American Association, Advancement of Science American Chemical Society American Ecological Society American Gas Association American Geographical Society American Mathematical Society American Museum of Natural History American Society Ichthyologists and Herpetologlsts (President, 1938–40) American Society of Civil Engineers American Society of Mechanical Engineers American Statistical Association California Academy of Sciences Fellow, American Institute of Electrical Engineers Mathematical Association of American Pacific Coast Electrical Association (President 1911, J-24) Pacific Coast Gas Association (President 1927-28) San Diego Society of Natural History Seismological Society of American Western Society Naturalists Sigma Xi Tau Beta Pi References External links Laurence M. Klauber biography, San Diego Natural History Museum Klauber Herpetological Library Eponymous species at Amphibian and Reptile Atlas of Peninsular California Works by Laurence M. Klauber at JSTOR Works by Laurence M. Klauber at Internet Archive A Century of Progress in the Natural Sciences, 1853-1953. California Academy of Sciences, 1955. Finding aid to the Laurence Monroe Klauber Collection, Online Archive of California. The San Diego Natural History Museum Research Library houses a significant collection of Laurence