174 RETUKN TO ENGLAND : AND VISIT TO PARIS 
Geog. district of the species should be mentioned under 
each. I am sure you can give me vast help in this. 
My Father thinks they should be published under our joint 
names, but I expect your kindness will lead you to do so 
much before I can begin that I scarce see how I shall be 
entitled to further credit than as a collector ; should you 
not think my name too presuming, I beg you to under- 
stand, that I am quite ready to swear to anything you say, 
to stand Godfather to any names you may insert, and to 
beheve anything except that the French have made better 
collections than the English. 
As to the question of making new species, he remarks : 
Generally speaking the plants (Jungermanniae) are very 
distinct from the European ones, though externally, like 
all creeping Crypts., they look like them. The fact is that 
all those who now have continued the study of Hepaticae 
for many years, find that besides the Europ; species 
having wdde ranges, there are plenty more with as wide 
elsewhere and others that are local too. Taylor has dis- 
criminated well, but not compared well with other dis- 
criminators. 
But: 
I am proving all or most of the Lycopodi to be the same. 
As to mere changes of nomenclature : 
I am not the least frightened at your changes of names. 
I always liked to call you a sticked algologist, but that is 
only in comparison wdth myself. The changes being for 
the better are signs of your improving ! The greatest men 
change their minds oftenest, e.g. Brougham, Stanley, 
Graham,^ and your own dear Don,^ who is a trump in my 
opinion. 
1 Graham, the Home Secretary of 1845 (see p. 204), was a lesser political 
luminary than Lord Brougham and Stanley, ' the Rupert of Debate.' 
2 David Don (1800-4]), botanist, son of George Don, for some time 
Curator of the Edinburgh Botanical Garden. Through Robert Bro\\n he was 
employed at the Apothecaries' Garden, Chelsea, where he became Librarian, 
and in 1822 succeeded Brown as Librarian at the Linnean Society. In 1836 
he was appointed Professor of Botany at King's College, London. 
