CONTENTS OF VOLUME IV. 



o Page 



buppLEMENTUM : additamenta, emendata et corrigenda : — 



Vol. I. !_ 46 



Vo1 - H 46-82 



Vol. HI 82 _ 95 



Cozumel Island, enumeration of a small collection of plants made in ] 885 by Mr. G. F. 



Gaumer 96-110 



A list of plants from Holbox, Mugeres, Cozumel, and Ruatan Islands, off the coasts of 



Yucatan and Honduras, collected by Mr. G. F. Gaumer in 1886 111-114 



Costa- Rican Ferns 115-116 



Appendix : 



Preliminary remarks 117 



.A sketch of the history of the botanical exploration of Mexico and Central America . 118-137 

 Outlines of the geography and the prominent features of the Flora of Mexico and 



Central America 138-167 



Summary and analysis of the Flora 168-222 



Relationships with the Floras of other regions 223-235 



Further details of the distribution of some of the more prominent natural Orders . 235-282 

 A specimen of the mountain Flora of South Mexico and Central America .... 282-299 

 Altitudinal distribution of Orchids in South Mexico, and the dominating features of 



the general vegetation 300-305 



Recapitulation of the dominant features of the Flora of Mexico and Central 



America, and remarks on its probable derivation 306-315 



Bibliography 316-332 



Index, Vols. I.-IV 333-498 



