lOO SOCIETY OF NATURALISTS. 



Leidy, Joseph, M.D., LL.D. 



Professor of Anatomy in the University of Pennsylvania, and 

 Director of the Biological Department, President of the 

 Faculty of the Wagner Free Institute, and President of 

 the Academy of Natural Sciences, Philadelphia. 

 *Lewis, H. Carvill, A.m. Geology and Mineralogy. 



Professor of Mineralogy, Academy of Natural Sciences of 

 Philadelphia, and Professor of Geology at Haverford Col- 

 lege, Haverford, Penn. 

 Academy of Natural Sciences^ Philadelphia^ Penn. 

 *Libbey, Wili.iam, Jr., A.M., D.Sc. Histology. 



Professor of Physical Geography, Princeton College, and Di- 

 rector of the E. M. Museum of Geology and Archaeology. 

 Princeton^ N.y. 

 *Macloskie, George, D.Sc, LL.D. Biology. 



Professor of Biology, Princeton College. 

 Princeton^ N.y. 

 *Marcou, John B. Geology. 



Assistant Geologist, U.S. Geological Survey. 

 U.S. National JMuseum^ Washington., D. C. 

 ♦Marshall, John P., A.M. Mineralogy and Geology, 



Professor of Mineralogy and Geology, Tufts College. 

 College Hill, Alass. 

 *Martin, H. Newell, A.M., M.D., D.Sc, F.R.S. Physiology. 

 Professor of Biology, Johns Hopkins University. 

 jfohns Hopkins University., Paltimore, Md. 

 *McGee, W. J. Geology. 



Geologist, U.S. Geological Survey. 

 U.S. Geological Survey., Washington., D.C. 

 McMuRRicH, J. Playfair, M.A., Ph.D. Animal Morphology. 

 Late Instructor in Osteology and Mammalian Anatomy, 

 Johns Hopkins University ; Professor of Biology, Haver- 

 ford College. 

 Haverford College., Penn. 

 *Meehan, Thomas. 



Botanist to the Pennsylvania State Board of Agriculture, 

 Vice-President Academy of Natural ScicMices, Philadel- 

 phia. 

 Germantovjn., Penn. 



