182 FIRST FORMS OF VEGETATION. 
sequence has obtained the common name of ‘ Her- 
pette des Tenturiers’ The same remarks may be 
made regarding Umbilicaria pustulata, already 
mentioned as an edible species, formerly largely 
collected in Norway for the London orchil mar- 
ket, and known as the ‘ Pustulatous moss’ of com- 
merce ; and also regarding the U. spodochroa, the 
largest and most plentiful of all the Norwegian Um- 
bilicariz, imported to this country for the manu- 
facture of cudbear under the name of the ‘ Veluti- 
nous moss.’ But it is needless to enumerate all the 
different species of lichens which have been, or are 
still, employed in different parts of the world in 
the production of colouring matter. This is the 
characteristic quality, more or less, of the whole 
tribe. The whole world may be said. to be an 
open field ; in every clime, in every soil, at almost 
every elevation, and in all seasons, tinctorial species 
grow, and even luxuriate. It is a matter of sur- 
prise in this age of scientific enterprise, consider- 
ing the tendency everywhere exhibited to multiply 
the resources of our country, and to find substi- 
tutes, in useless and neglected rubbish, for expen- 
sive articles employed in the arts and manufac- 
tures, that the attention of the commercial and 
manufacturing public has not been directed to the 
field of inquiry and resear¢h, so promising in rich 
results, which the dye-lichens present. 
