Where you may find illustrations or examples 
of some of the subjects noted in this leaflet 
THE DARWIN HALL OF INVERTEBRATES 
The exhibits in this hall, on the first floor, give a complete synopsis 
of the Animal Kingdom, all groups from Protozoa to Vertebrates being 
represented. Here too are groups illustrating relation. to environment, 
the Struggle for Existence, Survival of the Fittest, Geographical Distri- 
bution and Variation in Nature and under Domestication. 
THE SYNOPTIC SERIES OF MAMMALS 
The attention of teachers of biology in our schools is called to the 
Synoptic Series of Mammals in The American Museum of Natural 
History, on the third floor, which has been developed with a special 
view of making it instructive to the student while at the same time of 
interest to the general visitor. 
It not only comprises examples of every family of existing mam- 
mals, illustrating in many cases their structure, and origin in point 
of time, but includes exhibits showing various points in the evolution of 
mammals, sundry principles of classification, and interesting or peculiar 
habits. ‘The specimens are, or are to be, accompanied by detailed 
descriptive labels giving the characters and more important information 
in regard to the various orders and families of mammals, the series 
being an example of Doctor Goode’s definition of a (university) museum, 
“a, collection of labels illustrated by specimens.”’ 
Among the subjects illustrated are albinos and melanos, 
modifications of the limbs for locomotion, structure and modifications 
of teeth, variations in the character of the brain, influence of environ- 
ment and adaptation of mammals to their surroundings. What may be 
called an introductory chapter gives the distinctive characters of 
mammals, and a family tree, showing the probable lines of evolution of 
the animal kingdom and the relation of Mammals to the other great 
groups or phyla, is in course of preparation. 
THE HALL OF INSECT LIFE 
In the next hall is the collection of Insects so arranged as to illus- 
trate their relationships to each other and to other animals (Classifica- 
tion), their importance, and such topics as Protective Coloration, 
Mimicry, and Evolution. 

