54 The American Museum of Natural History 



Minerals and Rocks. Adapted for Grades 3B and 4A : 



Containing twenty specimens of minerals and building stones 



Native Woods. Adapted for Grades 2A and 5B : 



Containing elm, hickory, maple, white birch, ailanthus, sweet-gum, sour-gum, 

 chestnut, sycamore. Specimens show cross, longitudinal and oblique sec- 

 tions of the wood, characteristic bark, annual rings, etc. 



PUBLIC HEALTH FOLIOS 



Adapted for Pupils of the High and Elementary Schools 



Spread and Prevention of Communicable Disease: 



Containing eighteen photographic charts illustrating how diseases are com- 

 monly spread and how they may be prevented 



Insects and Disease: 



Containing twelve photographic charts illustrating the life-histories of some 

 common household insects, which carry disease. Conditions favorable for 

 the breeding of these insects are also shown, as well as methods of exter- 

 mination 



Bacteria and Their Work in the World: 



Containing eight photographic charts illustrating beneficial and harmful 

 bacteria and their work 



The specimens in the collections have been selected with a view 

 to supplying- material required in the Syllabus of Nature-Study issued 

 by the Board of Education. 



Each collection is accompanied by a set of notes, brief but in 

 the nature of suggestions to teachers, giving facts on the structure, 

 habits and characteristics of the particular species in the collection. 

 To the notes is appended a bibliography of the subject treated. 



Memoranda regarding the Loan of Circulating Collections: 



1. Applications for the use of collections should be made by the Principal 



2. Applications should be addressed to the 



Curator, Department of Public Education, 

 American Museum of Natural History 



3. Messengers of the Museum will deliver the collections and transfer them 



at the end of the loan periods, without expense to school or teacher 



4. Collections may be retained for a period of three weeks 



