JOHN HUTTON POLLEXFEN, 439 
his name in favour of his friend. Before this date he had made a 
large collection of Owing seaweeds, and was in correspondence 
with Mrs. Gr riffiths, Dr. R. K. Gr eville, Sir W. J. Hooker, pi other 
Pollexfen now, for a time, turned his attention to geology, 
making three collections of fossils from the old red sandstone, which 
till then had been considered by geologists a formation in which hi 
fossil remains existed. One of these collections is no 
Woodwardian Museum at Cambridge. About this time he decide 
to give ie the practice of medicine, which was distasteful to him, 
and enter the Church. In 1840 he went to Queen’s College, 
Societ iy, of eee he ei the ols preg we nt Phin He 
information on Orkney seaweeds contained in the Phycologia 
Britannica. He was the first to notice Antithamnion floccosum 
Kleen on the shores of these islands. At first Harvey believed 
name a Polleafenii; subsequently, however, he 
covered that it was the Conferva floccosa of the Mlora Danica, 
Tt was from spésiinbnd in Pollexfen’s herbarium that Harvey drew 
the figures of Chrysymenia Orcadensis, Ectocarpus nets uctus, and 
Nitophylium punctatum var. Polleafenii. Pollexfen also drew u 
very complete list of the Marine Alge of Orkney for his friend the 
late G. W. Traill, who made great use of it in his * List 
Pollexfen belonged to that rare class of field naturalists who 
do more collecting “than writing, but his name will ever remain 
familiar to algologists through the genus Polleafenia, setter Harvey 
named after his friend. Through the kindness of his family, his 
collection of stiecbas has come into my possession, where it will 
always be n ion. 
ier i array ene Epwarp A, L, Barrers. 
