SI tidies ill Problemaiic Organisms. 63 



FucoiDES.* There is not, nevertheless, the least doubt of the 

 analogy of the greater number of these plants with those of 

 the family of Algce; this analogy is so evident that we have 

 determined to unite in one genus all the fossils that appear 

 to have belonged to the family of non-articulate Algae, though 

 the variable forms presented by the plants of this order render 

 the characters of the fossil genus difficult to establish. The 

 whole of these characters give, however, to these vegetables 

 a sufficiently distinct aspect to prevent them being confounded 

 with any other fossil plant." 



The next reference is as follows : 



" FucoiDEvS : — I do not enter here into details of the species 

 of Fiicoidcs of the upper sedimentary terrane, since I will do 

 this in a special work, wherein will be given the Fncoides of 

 various terranes; a work in which M. Agardh has kindly 

 offered to aid me with his council, and to which the profound 

 knowledge this celebrated botanist has of the plants of the 

 family can give a very great degree of exactness. 



" I shall here content myself with saying that the small 

 number of species so far observed in the upper sedimentary 

 terrane appear to agree sufficient]}' with established genera of 

 the family, and that some species very closely resemble even 

 living species. 



" It is principal]}^ at Monte Bolca, near Verona, that these 

 fossils have so far been discovered." (pp. 307-308.) 



The last reference to the genus in the paper describes the 

 localities where the fossils had been found, f but as this is dis- 

 cussed more fully in the next paper to which we shall refer, 

 the matter will not be entered into here. 



The joint paper alluded to, by Brongniart and Agardh, 

 does not seem to have ever been published, but the subject 

 was taken up again by Brongniart the following year. As 

 this second paper is of considerable importance, and is not 

 readily accessible to many, we shall give the preliminary 

 remarks in full, with a mention of the species described. The 

 description of the type species will also be given. 



"* Fucoides strictus, Agardh, ined.. pi. Ill, fig. 3. This fossil has been found in 

 beds of lignite, discovered in the island of Aix near Rochelle, by M. Fleurian de 

 Bellevue. It forms part of a work that M. .\gardh has kindly undertaken with me 

 on the fossil plants of the family of Algte." 



tibid., pp. 335-336. 



