Cassells European Ferns. 
'/;-iccnt£rooks Day &.S011L.L. 
I POLYPODIUM VULCARE, (Common Polopody) 2 POLYPODIUM PH EGC PTER I S, ( Beech Fern) 
( -§- natural size.) 
3. PINNA OF P VULGARE (under surface NATURAL SIZE 
4 PINNA OF P P H EGO P TER I S D° . 0° 
5. PINNULE OF P PHEGOP:ERIS D° 4TIMES NATURALSIZE 
