Report of the President. 13 



rence ; for a Brown Pelican group, from Florida, and for several 

 groups of land birds, to fill gaps in our series of New York birds. 

 Specimens have also been acquired for the local mammal groups, 

 which are well under way. 



The Department of Parks has contributed 48 specimens of 

 mammals, and 44 of birds. 



We are indebted to the generosity and public spirit of the Very 

 Reverend Doctor Eugene A. Hoffman for the gift of a collection 

 of butterflies from Mexico, Central and South America, number- 

 ing 2,250 specimens. 



Fourteen enlarged transparencies of selected types of trees, 

 photographed from nature, have been added to the " Jesup Col- 

 lection of North American Woods." These pictures are dis- 

 played in the windows of the Wood Hall, and are provided with 

 transparent labels. Eighteen specimens of trees new to the col- 

 lection have also been added. 



The Library has received a very notable accession in the 

 Marcou collection of works on geology, presented to the Trus- 

 tees by his heirs, Mr. John Belknap Marcou and Dr. Philippe 

 Marcou. This library was formed by the late Prof. Jules Marcou, 

 an eminent authority in this domain of science, whose reputation 

 is world-wide. This gift comprises about 3,000 volumes and 

 a large collection of maps. It had the distinction of being (with 

 one exception) the largest private library of its kind, and, it 

 is claimed, places the Museum in possession of the most com- 

 plete collection of literature on geology and palaeontology in 

 America. The Trustees are to be congratulated upon the gener- 

 osity of the donors in selecting this Museum as their beneficiary. 

 The scientists and students of New York will appreciate the 

 opportunity for reference they will enjoy from the location of the 

 library in this city. 



During the year, the Duke of Loubat presented to the library 

 76 volumes and a number of pamphlets on Mexican Archae- 

 ology, besides 10 large albums of photographic views pertaining 

 to Ceylon and Java, and the ruins of Palenque, Mexico. 



The Department of Vertebrate Palaeontology has received 

 from its exploring parties a very important collection of skele- 

 tons and parts of skeletons of fossil reptiles and mammals, as 

 mentioned in the detailed list of accessions. 



