NATURE-STUDY COLLECTIONS. 



If you are interested in collections for nature-study teaching, you will be interested 

 in the full-page account of our minerals, rocks, relief maps, fossils, mounted birds, and 

 biological collections on page 49 of No. I of Thk NATURK-STrov Review. 



If you would know more about these, send us your address on the back of a postal 

 card, with the words "Nature-Study," — we will know what it means, an<l it will pay 

 you to be on our mailing list. We are here to help you. 



Remember that we are the pioneers in this work and that we have t he largest stock 

 in the country to select from. Remember also that we have not only planned the col- 

 lections for you, but have published descriptive catalogues to accompany them that are 

 virtually pocket text-books of the subject, and are actually used as such in many places ! 



Ward's Natural Science Establishment, 



76-104 College Ave., Rochester, N. Y. 



FOR TEACHERS OF BOTANY AND NATURE STUDY 



We now have ready two auxanometers (plant-growth recorders), Lloyd's model at 

 }^2.oo, and the HMSAC at ^2.50 ; lattice-work plant presses at 35 to 60 cents ; trans- 

 parent specimen cases for life-histories, wood frame, separable, dust proof, no case is 

 better, 45 cents and up, many sizes. Other simple apparatus ready and in preparation. 



LOWEST PRICES. SEND FOR CIRCULARS. 

 <' HOME-MADE" SCIENTIFIC APPARATUS CO., Mechanicsburg, 0. 



HELPS IN BOTANY 



The American Botanist is an illustrated monthly journal devoted to in- 

 teresting facts about plants. It prints no technical articles, but treats of such subjects 

 as color, fragrance, nectar, pollination, seed-dispersal, and the uses and habits of plants. 

 Worth many times its price to any teacher interested in Botany. Subscription $1.00 a 

 year ; sample for a two-cent stamp. Address, 



WILLARD N. CLUTE & CO., Binghamton, New York. 



LEWIS' TREE-LEAF CHARTS 



Size 22 by 28 inches. Printed on good paper. Recommended by the best author 

 ities in the country. Send for circular. 



Price of Single Number 50 Cts. eacli. Parts SI. 40 each. The Ten 

 numbers now printed for $4.50. Cash in advance. 



For further information address the author, publisher and proprietor, 



GRACEANNA LEWIS, Media, Pennsylvania. 



MARINE BIOLOGICAL LABORATORY 



Supply Department,— !• Zoology — Preserved Material of all types of animals for 

 class work or for the museum. '4. Botany- Preserved Material of Algae, Fungi, Liverworts and 

 Mosses. For price lists and all information address GEO. M. GKAF, Curator, Woods 

 Holl, Mass. 



