THE NAUTILUS. 



in 



Glass-top Boxes. 



"What to do with the Ut'le shells," " How to make them both sate and accessi- 

 ble," " In what way to show them to the best advantage," are serious questions 

 to many an ardent collector. For the tiny species demand notice quite as much 

 as their larger cousins. The older methods pill-boxes, vials, capsules, affixing 

 to tablets, have been weighed, found wanting, and discarded one by one. Some 

 years ago we found a much more satisfactory solution of the problem, and have 

 since used in our mounted collections 



Glass-top PaperBoxes 



of various sizes, both circular and rectangular. In re- 

 sponse tothe demands of our customers we are now sup- 

 plying the smaller sizes of these at low rates per dozen or 

 gross. They are neat and pleasing in appearance, while- 

 lined and black-bound; and when the shells are placed 

 within upon sufficient white or colored cotton to hold them against the glass 

 cover, they are safe from all injury, beautifully displayed and readily examined 

 without, removal. The bottom of the box is left white, to receive the label or list 

 number. Write to us for sizes and prices. 



Ward's Natural Science Establishment, 



28 TO 40 COLLEGE AVENUE, ROCHESTER, NEW YORK. 



A New Classification of the Unionidae^^^^^^ 



" THEMOLU'M'A OF THE CHICAGO AREA." 



F. C. Baker. 



130 pages, 270 figures, 28 plates. Gives descriptions and figures of Northern Uni- 

 ted States Unionidse andSphaeriidse. Price, tiO cents, post-paid. Address 



K. C. BAKER, The Chicago Academy of Sciences, Lincoln Park, Chicago. 



