CHAPTER 
XVI. 
XVIL. 
XVIII. 
XIX. 
CONTENTS 
PREFACE 
DEVELOPMENT OF THE FERN LEAF 
WALL-RUE 
MAIDENHAIR - 
Hart’s-TONGUE 
POLYPODY 
PurpPLE CLIFF-BRAKE 
Narrow-LEAVED SPLEENWORT 
MAIDENHAIR SPLEENWORT 
Esony SPLEENWORT . 
CHRISTMAS FERN 
SLENDER CLIFF-BRAKE 
SILVERY SPLEENWORT 
New York FERN 
MASSACHUSETTS FERN 
MARGINAL SHIELD FERN 
SPINULOSE FERN 
WALKING LEAF 
Narrow-LEAVED CHAIN FERN 
SENSITIVE FERN 
