UVA-URSI VERSUS ARCTOSTAPHYLOS 183 
and periodic climatal and other changes. Also we know from 
the early life-history or ontogeny of living species that a certain 
progressive development has taken place. If zoologists adhere to 
the decision that what we observe in plants has taken place in 
the case of animals * by means of Natural Selection, we mus 
mals * 
ow to their superior kneaded as to the cause in accepting (or 
not) the validity of our analogy as to the fact. 
UVA-URSI VERSUS ARCTOSTAPHYLOS. 
By Freperic N. Wittiams, F.L.S. 
In tracing back the payee of the eight British species of 
Siphonandracee, it becom ange to cape oe ee er sos 
authorities for their ¢ anene s gn The current na 
common. ee is detastaphy lie Uva-urst prone af "ae 
Veget. ii. p. 287, and it dates from 1825. It was included 
by Linnzeus among the species of Arbutus, as Arbutus Uva-urst 
17 
Arbutus and Uva-ursi are two genera which were well defined 
and characterized by Tournefort, and were without any adequate 
reason indefensibly united by Linnewus. The present view that 
the two genera are quite distinct was current even soon after the 
time of Linneus. The name ot Arctostaphylos was proposed by 
Adanson, Fam. Pl. ii. p. 165 (17 th - is there no more than a 
“nomen semi-nudum,” as the two or three words of diagnosis 
are too vague to characterize it, ahd “thas is no indication as to 
which or how many of the Linnean species of Arbutus should be 
in fav our of an earlier restoration of Tournefort 
Plant rum, the aes point for the names of both genera and 
‘slau adop y those who are in accord with the Vienna 
recommendations. 
ork that seems to have been altogether overlooked b 
i 
students of nomenclature is the fourth edition of the Abridgement 
of Miller’s Gardeners’ Dictionary, a in 1754, a year after 
the oe no0 i 2 Species Planta This seed work is tlio 
coos articles but in the omission of the unt ——— — Tt 
is therefore SLaee matter scissors. There 
very few — about of this edition of Miller’s my 
= Is the caso of the Cephalop da I can speak from some acquaintance with 
the main types of fossil forms. 
