338 Notes and Errata on a Former Paper. 



The evidence of the existence of land plants during the Upper 

 Silurian age is more satisfactory. Prof. J. W. Dawson, of Montreal, 

 has announced the discovery of vascular cryptogams in the Upper 

 Silurian strata of Gaspe, Canada. Here, with a large number of 

 fucoids, a few specimens have been found, which he refers to his 

 genus Psilophyton, In these the scalari-form axis and the outer fibrous 

 bark both remain, and serve as guides in their classification. 



With these exceptions, no land plants are reported below the 

 Devonian. On this point, however, the evidence is all negative, and 

 highly organized land plants may be at any time found in the Lower 

 Silurian rocks. Indeed, the variety and high rank of the Devonian 

 flora prepares us to expect such a result. Strict accuracy compels us 

 to state, however, that up to the present time positive proof of the 

 existence of land plants in the Lower Siluran has not been met with 

 in other countries, nor is it furnished by the specimens under consid- 

 eration. 



Notes a7id Errata on a former paper, by V. T. Chambers, on Prof. 

 Frey, and some American Teneina.^ 



Correction of the typographical errors in the article by V. T. Cham- 

 bers, Esq., on Prof. Frey, and some American Teneina, viz: 



Page 195, line 15, for "as" read "and;" and line 24, for "Ball ' 

 read "Boll." 



Page 197, line 3, for "colabour" read "colaborer;" and line 21, 

 omit the word " undescribed." 



Page 199, line 6, for "Holland" read "New Holland;" and line 

 30, for ''malifobaUa" read " malifoUeUa.^' 



Page 200, line 24, for "this" read "his;" and iu the last line 

 for " paradadoxum " read " paradoxum." 



Page 203, line 22, for " larvce" read " larva." 



Page 206, line 20, for "lespedezia" read ^'- lespedeza ; '^ and same 

 page, line 34, for " noun" read "name." 



Page 207, line 10, for " heliantMim" read Jielianthemella." 



Page 208, line 15, for " larvoe " read " larva ; " line 22, for 



* The typographical errors which have occured during the year, are generally such as are quite 

 manifest to the reader. A few occurred where the proof was not read by the editor, for in- 

 stance Palseomanon on page 192 misspelled Palxmanon. 



