Eaton’s “Ferns of North America” has been out of print for some time and is constantly advancing in price. We can offer a second-hand copy, the two volumes bound in cloth, clean and in good condition, for $35.00, express paid. There are 81 colored plates, and all the North American ferns are described. Address, THE FERN BULLETIN, Binghamton, N. Y. [Illustration: WILLIAM RALPH MAXON.] CONTENTS THE FERN FLORA OF NEW YORK. 97 Ophioglossaceae. 98 Osmundaceae. 99 Schizaeaceae. 100 Polypodiaceae. 100 Equisetaceae. 103 Isoetaceae. 103 Lycopodiaceae. 103 Salviniaceae. 104 Selaginellaceae. 104 FERNWORT NOTES—IV. 105 SCOLOPENDRIUM FROM CANADA. 107 THE GENUS EQUISETUM IN NORTH AMERICA. 108 THE SPECIES-CONCEPTION AMONG THE TERNATE BOTRYCHIUMS. 115 NEW FORMS OF FERNS. 118 FERNS IN BOTTLES. 120 WILLIAM RALPH MAXON. 121 ANOTHER STATION FOR ASPLENIUM EBENEUM HORTONAE. 122 INDEX TO CURRENT LITERATURE RELATING TO FERNS. 122 EDITORIAL. 123 BOOK NEWS. 125 A WORD FROM THE EDITOR 129 THE FERN BULLETIN _VOL. XI._ _OCTOBER, 1903._ _No. 4_ THE FERN FLORA OF NEW YORK. By B. D. Gilbert.