Obituary—John Francis Walker, M.A., ete. 381 
his degree, Mr. Walker proceeded to the University of Bonn, where 
he studied organic chemistry under Professor Keckule, and remained 
in Germany during the Franco-Prussian War. Returning to London, 
John Francis Walker studied Law, and was in due course called to the 
Bar, but never practised. 
He subsequently returned to Cambridge as Chemical Lecturer, 
and was elected to a Fellowship in Sidney Sussex College, where he 
had formerly been a student. But even his love for chemistry was in 
time entirely overshadowed by his stronger attachment to geology. 
In 1867 he was elected a Fellow of the Geological Society, and 
in 1873 of the Linnean Society. About this time he also became a 
Fellow of the Chemical Society, and a member of the Geologists’ 
Association. 
J. F. Walker took the deepest interest in collecting the fossils from 
the Lower Greensand of Cambridgeshire, known generally as the 
*Coprolite Workings,” and on May 7th, 1867, he communicated his. 
first paper to*the Yorkshire Philosophical Society on ‘‘Some new 
Coprolite Workings in the Fens” (Gror. Mac., Vol. IV, p. 309), and 
later on in the same year another paper, ‘‘On some New Terebratulidee 
from Upware” (Groz. Mae., Vol. IV, p. 454, Pl. XIX). 
In 1882. Mr. Walker married Miss Alice Cracknell, of Knowle. 
House, Ealing, W., and afterwards retiring from Cambridge he settled 
at 45, Bootham, York, devoting the greater part of his time to his. 
geological pursuits. 
During his residence in York, for the last 25 years, John Francis 
Walker has taken the deepest interest in the prosperity of the York- 
shire Philosophical Society’s Museum, and has been for some time past 
its senior Vice-President and Honorary Curator of its Geological 
Collection, to which he has also been a most liberal donor. 
He presented the types of his Cambridge Greensand Brachiopoda 
to the British Museum, and those illustrating his joint paper with 
Mr. G. W. Lamplugh, ‘‘ On the Brachiopoda from the Lower Green- 
sand of Leighton Buzzard, Bedfordshire,” to the Geological Society’s 
Museum. 
Mr. 8. 8. Buckman, F.G.S., writes to the Editor :—‘‘ The loss of 
our friend and fellow-worker in geology, John Francis Walker, will 
be keenly regretted by all who are interested in the study of 
Brachiopoda. They will miss a gemial friend who was ever ready 
with kind sympathy and practical help. He had accumulated 
a splendid collection of British and foreign Brachiopoda; and he 
would place his knowledge and his specimens at the disposal of other 
students with the greatest generosity. Many anecdotes are told of 
his readiness to help. Jf an investigator wished to examine certain 
specimens from a Yorkshire locality and Mr. Walker had not 
a sufficiently good series, he would take the trouble to make a special 
visit to the locality in order to obtain the necessary material. Or 
a student wishing to compare some foreign species with its British 
allies, made application to Mr. Walker. If he possessed specimens 
they were placed at the student’s disposal; but on occasions when he 
had not any examples he has sent to the Continent to purchase them, 
and has desired the student to keep one of the best for his own 
