65 
of Levenshulme limestone have been removed to the gardens 
at Brockhurst, Didsbury, where they have been permanently 
placed, so as to be accessible to all interested in the study 
of them. They bear evidence of having formed an outcrop 
of limestone for some time before they were finally covered 
up by the boulder drift clays. Many of the blocks are much 
weathered upon several surfaces, as if they had formed the 
top of a hill, ]ike the creviced summit of a limestone crag. 
Others are planed quite smooth, showing the veins of spar 
as in polished marble, and have probably formed a floor, over 
which the grinding force of the boulder drift passed. One 
large block shows very clearly the effect of glacial action, 
having well marked stride and a smoothly polished surface ; 
and others are rounded and worn, as if they had been 
knocked about a good deal. They thus bear evidence of 
the forces to which they have been subjected, and are in- 
teresting illustrations of glacial action. They also contain 
many fossils. 
Joint Meeting of the Microscopical and Natural History 
Section and the Parent Society. 
January 15th, 1883. 
James Cosmo Melvill, M.A., F.L.S., President of the 
Section, in the Chair. 
Mr. Rogers exhibited a slide of the Lingual Palate of 
Trochus Milligranus stained in nitrate of silver, and mounted 
in dammar. 
