BIOGRAPHICAL INDEX 323 



Geological Survey of the Territories, under Prof. 

 Hayden. 



Lea, Isaac, LL. D., 1792-1886. Dr. Lea's an- 

 cestors came over from England with William 

 Penn. Most ot his lite was spent in Philadelphia, 

 where he was connected with a large publishing 

 house. His writings are very voluminous, relating 

 chiefly to the UnionidcE, or River Mussels. 



Leach, Dr. Wm. E. Curator of the Natural 

 History Department of the British Museum, during 

 the earl}^ part of the last century. 



LiNNE, or Linnaeus, Carl von, (Linn.), 1707- 

 1778. The great Swedish naturalist and author of 

 the modern system of scientific nomenclature. His 

 early life was full of difficulties, but when he became 

 professor of Botany at the University of Upsal, his 

 department soon became filled with eager students. 

 He wrote many valuable works, and received great 

 honors. 



MacFarland, Frank M., 1869 — . A profes- 

 sor in Stanford University, whose special work upon 

 mollusks is with the sea-slugs, or Nudibranchs. 



Meek, F. B., 1817-1876. A naturalist whose 

 work was largely with fossil shells, especially those 

 of California. 



Merriam, Prof. John C, 1869 — . A dis- 

 tinguished geologist and teacher, connected with the 

 University of California. His special work is with 

 vertebrate fossils. 



Middendorf, Dr. A. Th. v., (Midd.), 1815- 

 1894. An early scientific writer upon the shells 



