Xotcs and Comments. 
account of the jointing in any area, and though in text books 
it was commonly declared that joints were in the direction of 
dip and strike, one could rarely find a body of data to justify 
the statement. The accumulation of such data might very 
well be kept as a subsidiary object of the field meetings of 
the society. Many theories for the formation of joints had been 
advanced, but there were needed more detailed field observa- 
tions over large areas, diverse in age, composition, and lie. 
Professor Kendall enumerated the following questions yet to 
be answered on the subject of jointing : Are joints really the 
dip and strike ? Do joints stand perpendicular to bedding ? 
Are all the beds in one vertical section jointed similarly as to 
direction, inclination, or relative strength ? Are joint systems 
continuous from bed to bed ? Are joints above a break in the 
succession affected by those below ? What effect has faulting 
<on joints ? Are joints affected by a second folding of >trata ? 
MEMORIAL TO WILLIAM NELSON. 
Naturalists in Yorkshire are joining in a memorial to the 
late William Nelson, of Leeds, who died a few years ago, and 
left behind a very valuable collection of shells and an extensive 
scientific library. These it is proposed to buy, and hand over 
to the University of Leeds as a memorial to one who, in his 
lifetime, was one of the ablest naturalists in the country in 
his particular branch of science, having been the first president 
of the Conchological Society of Great Britain. His great col- 
lection of shells is of world-wide interest, and is peculiarly 
valuable as affording a study of the mollusca. It is particu- 
larly fitting that the memorial to him should take the form 
proposed, since the presence at the University of his great 
collection will add considerably to the opportunities for study, 
and will be accessible, of course, to all naturalists who take 
an interest in the subject. We note that these various 
collections are being housed in the University; one wonders 
what about the museum at Leeds ! 
ALFRED RUSSEL WALLACE. 
The recent death of Alfred Russel Wallace removes from 
our midst the last of the real giants of the scientific world. 
There is not living to-day, so far as we know, a man who can 
even approach him. Born so long ago as 1823, he had been 
spared to accomplish much. Like his friend Darwin, he was 
of a very quiet and retiring disposition, and could very rarelv 
be induced to take part in any public gathering — the Darwinian 
celebrations being an outstanding exception, his presence at 
which no doubt being due to a sense of respect and duty to 
Darwin. To Wallace, almost equally with Darwin, was the 
credit of the first ideas of the theory of Evolution. He received 
the Order of Merit. Among his many monumental contri- 
1011 Jan. 1 . 
