NOTES—MAMMALIA. 75 
common mineral in some cases of metamorphism ; in this instance 
built up from the dusty decomposition-products in the original grit, 
chiefly calcite and kaolin. 
is well known that in some regions massive quartzites and 
quartz-schists are found associated with various crystalline schists, 
and their precise mode of origin is a question not to be lightly 
handled. The absence of such rocks in our northern counties 
enables us to avoid a thorny question, There is, however, one 
other point about quartzites worthy of notice. Owing to their highly 
durable character, they are very frequently represented among 
the pebbles in conglomerates. The white and ‘liver-coloured’ 
quartzites in the seca Pebble-beds of Lancashire and Cheshire 
are an instance. Possibly a careful examination of these would 
enable some varieties to be identified with certainty, and so 
throw additional light on the problem of the source of the 
materials. 
NOTES—MAMMALIA 
A White Seal on the Lincolnshire Coast.—I am indebted to Mr. G. 
Caton Hai hy of Grainsby Hall, fo the following note. Stubbs, the wild iri 
of Tetney, states that oe the le of December he saw a perfectly white seal 
big on the mud by Tetney Han en. He punted to within fifteen yards, but his 
fire, and the seal slipped away before the shot struck and did not 
appear again. Hews s it was so white that in ee distance he thought it was a 
swan. He did not notice any dark marks on its back or muzzle. Stubbs is so 
well acquainted with the appearance of seals on the banks that it is very unlikely 
he should make any mistake in describing the colour of the present visitor, which 
i i tulina. Two or years ago 
e place. This isn E 
collection, The skull was sent at the time to Mr. Southwell, of Es for 
a aie eg ea CorpEaux, Eaton Hall, Retford, Jan. 29th, 1892. 
Young nated at Thorp Arch.—In British SS = singe A 176) 
Prof. Bell writes :—* The female [Otter] prod hree to five 
: co) 
Sed, as the animal was far too young to be able to leave the nest.— 
=DGAR R. Ware, The Museum, pe 13th February, 1892. 
