SEND AT ONCE FOR MY 



JUNE, 1903, SPECIAL BULL ETIN OF 



Microscopes ^ Objectives 

 Cameras, Photographic 

 Lenses, Etc. 



Bear in mind I guarantee every instrument to be as represented and in good work- 

 ing order and adjustment. Prices in parenthesis indicate list price, by which is 

 understood present or latest list price. This stock is constantly changing ; therefore, 

 if interested, place order at once. Send name and address if you would like to receive 

 these lists as issued. 



A SPECIAL OFFER 



To facilitate the purchase of such a microscope as shall with certainty prove satis- 

 factory and adequate to its intended use, I am willing to make the following proposi- 

 tion whereby YOU RUN NO RISK of getting an unsuitable instrument. The offer is : 

 Order what microscope you like from this list ; use it for one or two months ; if then 

 yon decide that you want another one on my list, or a new one of whatever make, 

 order it from me and return the other one (prepaying expressage) and I will allow 

 you FULL PRICE PAID. 



EDWARD PENNOCK 



DEALER M OPTICAL INSTRUMENTS 3609 Woodland Ave. 



Opposite Medical Department, University of Pennsylvania 

 PHILADELPHIA 



"MOSSES WITH A HAND LENS" 



BY DR. A. J. GROUT 



It is the only book of its kind in the English language. It makes the mosses as easy 

 to study as the flowering plants. Eight full page plates and ninety figures in the text. 

 Price $1.10 postpaid. Send for sample pages to O. T. Louis, 59 Fifth Avnue, N. Y. City. 



ALL, SONE 



Almost as soon as the April Flkn Bulletin was in the mails, the early back 

 numbers offered therein were sold. And the orders continued to come— even from 

 Europe. This is the first opportunity we have had to explain the situation and we 

 hasten to say that 



We have no numbers earlier than Vol. VI. 



and the orders for other volumes so cut into our stock that we now have only 39 sets 

 of Vol. VI. This means that only 30 more of our subscribers can have complete files 

 from Vol. VI., No. 1. Verbum sat. Vol. VI. will not be sold separately, except to 

 subscribers 



We can furnish volumes 6, 7, 8, o, and 10 at v$c *»ach, or the set for $\oo. Any three 

 volumes for $2.00. Will add a year's subscription for 50 cents extra. Make sure that 

 vour own set will be complete by ordering early THE FERN BULLETINt Blnghamton, 

 N. Y. 



