4 PREFACE T(J SERIES II. 



the drawings, and the same well-known firm continue to execute the 

 Lithographic plates. The same assistance will be extended by numerous 

 correspondents all over the United States ; and with the increased love 

 of the task which the success of the first venture brings to the author, he 

 hopes to make this second "General View of the Native Flowers and 

 Ferns of the United States," at least as interesting as the first. 



Special acknowledgments of friendly aid will appear as the work pro- 

 gresses; but more than this is due to Professor C. S. Sargent, of the 

 Cambridge Botanic Garden, to Mr. Jackson Dawson, the gardener at 

 the Arnold Arboretum of the Bussey Institute, and to Mr. John H. Red- 

 field, the conservator of the Herbarium of the Academy of Natural 

 Sciences of Philadelphia, for continuous and generous assistance on 

 frequent occasions. 



THOMAS MEEHAN. 



GER.M.\NTcnV.\, rHILADELPHIA, May, 1879. 



