158 NATURAL SCIENCE [September 
system of England. We say intelligent advisedly, because Mr 
Woods has not included in his lists those scraps of fossils which 
are considered by some authors worthy to occupy their text and 
their plates. The mollusca of the Chalk Rock have been described 
in the Quarterly Journal of the Geological Society, vols. lil. and liii., 
and comprise ten cephalopods, sixteen gasteropods, and twenty-nine 
lamellibranchs, and of these some seven of the first group occur in 
Saxony and Bohemia, two or three only of the second group, and 
about one half of the third. Fossils from this zone are rarely 
obtained in a perfect condition, and are frequently denuded of their 
shell, but Mr Woods has succeeded in figuring some typical speci- 
mens which will be useful to the collection. In looking through 
part ii. of his paper, we do not see any mention of Dover, where the 
Chalk Rock is easily accessible and fairly rich in fossils ; indeed, in 
a few hours we have collected all but two of the gasteropods men- 
tioned by Mr Hill in the Quarterly Journal, vol. xlii. As the ener- 
getic members of the Geologists’ Association were observed in 
numbers at the Chalk Rock of Dover last Easter, Mr Woods might 
easily have obtained a list of specimens. It is gratifying to read 
that the author intends to proceed with the Inocerami, for they are 
in worse confusion than most other shells. His synonymies of 
LIima hoperi and Spondylus spinosus are interesting and important. 
Mr Woods will forgive us perhaps if we point out to him that 
Salvius did not print the molluscan part of Linné’s edition xi. until 
1767, and therefore the date cannot be 1766 ; but why not use the 
tenth edition, 1758, now almost universally recognized ? 
A list of other remains identified is supplied, and discussions on 
the distribution and relations of the fauna and conditions under 
which the Chalk Rock was deposited are given. The whole is a 
useful and valuable paper which will be largely in request. 
TIERRA DEL FUEGO 
In September last year we were favoured by Dr Ohlin with an 
account of the zoological results of Baron Oscar Dickson’s expedi- 
tion to Tierra del Fuego. A preliminary notice of the geographical 
results of that expedition is now published in the Scottish Geo- 
graphical Magazine for August. The country consists of a wood- 
less tableland in the north, and a mountainous district in the 
south, the latter being the extreme continuation of the Cordilleras. 
The boundary between the two zones is almost a straight line. 
The northern country is stated to be of Tertiary age, covered partly 
by gravel and partly by moraine. 
