ILLUSTRATIONS 



PLATE PAGE 



MARGINAL SHIELD FERN Frontispiece 



WALL-RUE I 31 



MAIDENHAIR .... II, III 4 1 



HART'S-TONGUE ... IV 47 



POLYPODY V, VI, VII 55 



PURPLE CLIFF-BRAKE . VIII, IX, X, XI 61 



NARROW-LEAVED SPLEEN- 

 WORT XII, XIII, XIV 69 



MAIDENHAIR SPLEENWORT XV 75 



EBONY SPLEENWORT . XVI, XVII 83 



CHRISTMAS FERN . . XVIII, XIX, XX 91 



SLENDER CLIFF -BRAKE XXI, XXII 97 



SILVERY SPLEENWORT . XXIII, XXIV, XXV 107 



NEW YORK FERN . . . XXVI, XXVII in 



MASSACHUSETTS FERN . XXVIII, XXIX, XXX 117 



MARGINAL SHIELD FERN XXXI, XXXII 123 



SPINULOSE FERN . . ... XXXIII, XXXIV, XXXV .... 129 



WALKING LEAF . . . XXXVI 135 



NARROW-LEAVED CHAIN 



FERN ...... XXXVII, XXXVIII, XXIX, XL, XLI 143 



SENSITIVE FERN . XLII, XLIII, XLIV, XLV .... 153 



