Second Hand Microscopes 



-At far below regular price. 



I RECOMMENDTHE FOLLOWING ^VS 

 SUITABLE FOR BOTANICAL WORIi: 



MICROSCOPE by Newton - , London*; full size, all brass, inclination joii 

 rack and pinion and fine adjustments; good achromatic dividing objective; givii 

 powers of about 30 and 75; in case, $10.00 



Or, With addition of a 1-5 inch achromatic lens, giving powers of about 

 75 and 280, $13.00 



Beck "Scholar's" Microscope, with draw tube and fine adjustment; inclir 

 tion joint; good 1 inch achromatic objective (B. & L.) ; powers about 60 to II 

 in case, $6.00 



Or, with addition of a 1-5 inch achromatic lens, giving powers about 60 

 100 and 300 to 500, $9.00 



Send for Bulletin of Second-Hand Microscopes and Cameras, just issued 



EDWARD PENNO CK, gtRlI ggtf ifT 



SPECIAL PRICES ON FERN 

 BOOKS 



Our Ferns in their Haunts, postpaid • • $2J 



The Fern Allies of North America, postpaid • • 2j 



(Ferns of the Upper Susquehanna free with an order for either the 



above.) 



" Our Ferns " and Fern Bulletin, one year • • • • 2. 



" Fern Allies " and Fern Bulletin, one year 3« 



"Our Ferns " and " Fern Allies," postpaid 3.1 



" Our Ferns " and " Fern Allies," with Fern Bulletin 4J 



" Our Ferns " and American Botanist, one year 2. 1 



" Fern Allies " and American Botanist, one year 



These works scarcely need description. A folder describing them will be 

 however, upon application. 



Willard IV. dute <5c Co., Joliet, III. 



