NATURE STUDY IN SCHOOLS. 



27 



Nature Study Collections. 



For thirty-seven years we have been preparing Systematic 

 Collections illustrating the various branches of Natural History 

 and have brought their selection as near perfection as possible. 



MINERALS are represented by thirteen collections varying in price 

 from $5. to $50. and others in the hundreds. 

 ROCKS by nine collections, varying from 

 FOSSILS by collections 



INVERTEBRATE ANIMALS 

 VERTEBRATE ANIMALS 



We also have Human Skeletons, Anatomical Models, Biological 

 Supplies, Minerals for physical and chemical examination, and indi- 

 vidual specimens in all departments. 



Write for lists, stating your particular needs. 



Ward's Natural Science Establishment, 



28 to 40 COLLEGE AVENUE, 



ROCHESTER, N. Y. 



$1. to $50. 



$20. to $50, 



$20. to $50. 

 $30. to $60. 



Microscopes Free of duty. 

 Leitz Compound Microscopes 



Can be imported in time tor jour 

 spring work by placing jour order at 

 Once. Take advantage of the Dutj Free 

 clause and save the amount of the dutj. 



L. E. KNOTT APPARATUS GO. 



i6 Ashburton Place, Boston, Mass, 



Microscopic, Chemical and Physical Apparatus. 

 Photometers and Chemicals 



CAMBRIDGE BOTANICAL 



SUPPLY COMPANY. 



1289 Massachusetts Ave., opposite 

 College Library, Cambridge, Mass. 



Histological and choice printing.. Crypto- 

 gamic material for laboratory classes in 

 botany. Send for Catalogue. Mounting paper 

 and herbarium supplies. Samples free. 



Everything Useful To Botanists. 



Teacher, Look at This, Teacher! 



20 Large Specimens all labeled, 35 cts. 



Coral, Chalk, Onyx, Calcite, Gypsum, Halite, Feldspar, 

 Quartz, Muscovite, Phlogopite, Flint, Talc, Serpentine, 

 Limonite, Magnetite, Hornblend Schist, Granite Horn- 

 blendic, Red Granite, Pudding Stone, Sandstone. 

 20 Of a kind, 1 1-2 by 1 1-2 inches, 30 ets. 

 i 70 Treraont St. Boston, Mass. IN" . I_j. "vV"ILSO!N" 



