28 
Harper Hill, Buxton, referred to by Mr. Darbishire at the 
last meeting. The character of the holes as true pholas 
burrows, was in each case fully recognised. 
Mr. Bottomley remarked that the specimens of limestones 
appeared to be decidedly argillaceous, which would tend to 
make them less liable to atmospheric decay. 
MICROSCOPICAL AND NATURAL HISTORY SECTION. 
October 7th, 1867. 
J. B. Dancer, F.B.A.S., President of the Section, 
in the Chair. 
The President in his address to the members of the 
section, described the various additions and improvements 
which had taken place in microscopes and apparatus, and 
gave a summary of the Microscopical researches which had 
been communicated to various societies, both English and 
Foreign, during the past year. 
The following extract of a letter dated 27th of August, 
1867, from Captain Mitchell of Madras, was read : — 
One or two things have come under my notice, which 
a friend who arrived in Madras from London a short time 
since, said, he believed were unknown to microscopists in 
England, I therefore send you a brief notice of them, in the 
hope they may interest some of the members of the society. 
The first is the presence of ciliated infusoria in dewdrops 
on leaves. I have to confess I took this subject up in jest, 
in consequence of a remark in an article published in one 
of our local papers ; about sunrise I placed an animalcule 
cage under the point of a leaf and transferred the drop of 
dew gathered there to the glass plate, and then examined it 
with the microscope. I repeated the experiment on two 
