XII 



Birds & Nature Magazine 



Forest Trees 

 in Photogravure 



THESE beautiful photogravures show 

 the characteristic appearance of our 

 common forest trees, and in addi- 

 tion give the leaf and bark habit which are 

 the chief distinguishing features. With 

 each picture is a description giving the 

 scientific and common name of the tree 

 its characteristics, habits, distribution, etc., 

 making the educative value complete. 

 With these pictures anyone may learn to 

 know and recognize our common trees. 



First Series 



Black Oak, White Pine, American Elm, 

 Lombardy Poplar, Tamarack, Soft Maple, 

 Willow, White Birch. 



Second Series 



Red Oak, Silver Leaf Poplar, Hickory, 

 Hard Maple, Fir Balsam, White Ash, 

 White Cedar, Beech. 



Third Series 



White Oak, Black Walnut, Horse 

 Chestnut, Basswood, Black Ash, Butter- 

 nut, Locust, Bitternut Hickory. 



Size 8x10 inches. Price 40 cents a series. 

 $1.00 for the set of three series. 



Atkinson. Metzner & Grover 



350 Wabash Avenue, Chicago 



Gems and 

 Gem Minerals 



By OLIVER CUMMINGS FARRINGTON 



Curator of Geology, The Field Columbian 

 Museum, Chicago, Illinois 



Royal Quarto, $3.00 



DR. FARRINGTON has writ- 

 ten in this book the best pop- 

 ular treatise on the subject of 

 gems and gem minerals. While the 

 book is delightfully written in descrip- 

 tive style, it is also authoritative, and 

 is recognized by the leading geologists 

 as complete and accurate in its schol- 

 arship. The author answers the 

 various questions that naturally arise 

 regarding gems, such as their origin, 

 nature, locality, value, varieties, and 

 gives just the information that a lover 

 of precious stones would like to 

 know. 



Notable Illustrations 



The book is illustrated with many 

 halftones, but is particularly notable 

 for the sixteen (16) full page illustra- 

 tions of gems and gem minerals in 

 their natural colors. Altogether, one 

 hundred and thirty-three (133) speci- 

 mens are shown in their natural col- 

 ors, and are grouped on the follow- 

 ing plates: 



1. Birth Stones 



2. Diamond Corundum 



3. Beryl 



4. Tourmaline 



5. Topaz 



6. Garnet 



7. Quartz (crystalline) 



8. Agate 



9. Quartz (obscurely crystalline) 



10. Opal 



11. Turquoise 



12. Feldspar 



13. Minor Gems 



14. Ornamental Stones 



15. Amber, Malachite, Lapis-Lazuli, 



Azurite 



16. Pearls, Jade, Corals 



The book is bound attractively in 

 dark green cloth and makes a beauti- 

 ful as well as a valuable addition to 

 the library. 



Atkinson, Mentzer & Grover 



350 Wabash Avenue, Chicago 



