DUPLICATE LICHENS HASSE COLLECTION 



The first 25 of the dupHcate Lichens from Dr. Hasse's collection will be 

 ready in September, and it is hoped to send out one fascicle every three months. 

 The price will be $5.50 per century; members of the Moss Society may secure 

 a century and credit for yearly dues for $6.50 at one time. Prices include all 

 transportation charges. 



The material in sight indicates at least ten sets of three centuries each, 

 though this is not guaranteed. Subscriptions will be filled in order received, 

 early comers get the preference. The material is above the average, almost 

 exclusively Californian, and all of Dr. Hasse's personal collection and naming. 

 Selection of material will be allowed ONLY when not breaking sets; in such 

 cases the price is $10.00 per century. 



The first fascicle contains: 



Arthonia polygramma Opeographa atia lichenoides 



punctiformis diaphora 



Arthothelium taediosum Parmelia enteromorpha 



Buellia alboatra — olivacea 



Collema limosum Parmeliella lepidiota 



nigrescens Pertusaria lecania 



Cyphelium bolanderi Physcia stellaris 



Gyrophora erosa Placynthium microphyllizum 



Heppia leptopholis Porina plumbaria 



Lecanactis californica Ramalina menziesii 



Lecania syringea — - reticulata 



Lecidea latypaea Rinodina angelica 



Schismatomma hypothallinum 



C. C. PLITT, = 3933 Lowndes Avenue, = BALTIMORE, MD. 



PHOTOGRAPHY FOR NATURALISTS 



Expert service in photographing Botanical Specimens for reproduction in 

 Magazines, or for Class Room Work. 



Lantern Slides from film or glass negatives, engravings, photographic prints, 

 or natural objects. Copying from every sort of original. Films developed and 

 printed. Enlargements in all sizes. 



Everything Photographic needed for Illustration by Writers and Teachers- 



WE CAN SUPPLY IT. 



G. K. MERRILL, 564 Main Street, Rockland, Maine 

 FOR SALE 



A number of books on Ferns, Mosses, Algae, Rhizopods, Infusoria, 

 Etc., some out of print and scarce. Also a collection of over 200 

 specimens of our native Ferns. For list and prices, apply to 



EUGENE A. RAU, 170 Church St., BETHLEHEM, PA. 



