

PUBLICATIONS 129 
From North America, there are important collections from Mexico, 
Nicaragua, California, Texas, Arizona and the Middle Atlantic States— 
the Rocky Mountain region being most poorly represented. Of special 
collections, the George N. Lawrence and Maximilian collections are of 
special importance from the hundreds of type specimens which they 
contain. 
Mineralogy.—Most of the mineral specimen are on exhibition, but 
the overflow from the public cases forms a study series of no mean propor- 
tion. 
Public Health—Living bacteria are maintained and distributed free 
to recognized laboratories. 
Vertebrate Palewontology.—The study collections comprise about 
15,000 catalogued specimens of fossil mammals, 6,000 fossil reptiles and 
amphibians and a few hundred fossil birds. Most of these are from the 
western United States. The collections of fossil horses, Eocene mam- 
mals and Cretaceous dinosaurs are unrivaled. The fossil rhinoceroses, 
camels, oreodonts, carnivora, Fayum, Pampean and Patagonian mam- 
mals, Jurassic dinosaurs, Permian reptiles, turtles, etc., are likewise 
of the first rank. They include more than nine hundred type specimens 
of fossil mammals and several hundred type specimens of fossil reptiles 
and. amphibians. 
The Museum Library, located on the fifth floor, contains about 70,000 
volumes on various branches of natural history (save 
botany,) anthropology and travel. It is particularly 
strong in vertebrate paleontology and scientific periodicals. Like other 
museum libraries, it is of necessity a reference librrry, but, except on 
Sundays and holidays, may be freely used by the public during the hour 
when the Museum is open. 
The Osborn Library, founded by President Osborn, is also on the 
fifth floor and contains works on vertebrate paleontology and related 
subjects. 
The publications of the Museum, aside from the Annual Report, fall 
naturally into two groups: scientific and popular. The 
former, comprising the Memoirs, Anthropological Papers 
and Bulletin, contain information gathered by the various expeditions, 
or derived from the study of material collected; they are from the nature 
of their subjects mainly of a technical character. The Memoirs consist 
of the larger, more important papers, or those that call for unusually 
large illustrations. These are issued from time to time as occasion may 
demand. The Bulletin comprises the shorter papers, those that contain 
information that it is desirable to issue promptly, and a volume of about 
400 pages is issued annually. The scientific papers are distributed, 
Library 
Publications 
