188 The Meeting of the British Association at York. 
ciliation cannot he used as a taxonomic character among bacteria— 
as lias recently been done by Migula—because under appropriate 
conditions, all the members of such groups as the Coccaceae, 
Bacteriacese and Spirillaceae in which this character has been used, 
can be made to acquire cilia. 
Mr. W. J. Gallagher contributed an account of some work 
which he has been doing in Professor Bi'tsgen’s laboratory on the 
comparative anatomy of the rootlets of Cupuliferae and Meliacea; in 
which he correlated the anatomical characters with the “ extensive ” 
or “ intensive ” function of the rootlets. 
The semi-popular lecture was delivered by Professor Yapp who 
gave an excellent account of the vegetation of different regions 
of South Africa, illustrated by beautiful lantern slides from his own 
photographs. _ 
Excursions, Etc. 
The local arrangements were under the able direction of 
Dr. Burtt, of the British Botanical Association, who arranged 
excursions on the Friday, Saturday and Tuesday afternoons to 
Askham Bog, Castle Howard and Skipwith Common respectively. 
Askham Bog and Skipwith Common are flat low-lying tracts of 
land in the alluvial plain of the Ouse, and showed many of the 
characteristic features of the inland peat formation on the sites of 
old meres, as well as the development of a heath flora and 
colonisation by birches and pines in the drier parts. A beautiful 
feature of Skipwith was the abundance of the marsh Gentian 
(G. Pneumonanthe) in full flower. The zonation of the vegetation 
in the order, jfuncus, Molinia, Erica Tetralix, Callnna, within two or 
three feet of altitude was very sharply marked. Rice in crystalloid 
and Botrydium granulation were discovered close to a pond near the 
Common. The former plant, we understand, is new to Yorkshire. 
On Monday afternoon the members of Section K paid a visit to 
the grounds and laboratories of the British Botanical Association, 
on the invitation of Dr. Burtt. Tea was provided and the members 
were photographed in the grounds of Messrs. Backhouse’s nurseries. 
In the evening a successful dinner was held at the Davyhall 
Restaurant. 
Among the guests of Section K were Professor E. C. Jeffrey, 
of Harvard, and Dr. A. F. Blakeslee from America, Professor 
Potonie from Germany, Professor Johannsen and Dr. Ostenfeld 
from Copenhagen, and Dr. Rosenberg from Stockholm ; the last 
three coming particularly for the Discussion on Fertilisation, 
