34 THE NORTHERN MICROSCOPIST. 
object ; and Fig. 5 is a section of Arran pitchstone under con- 
siderable amplification. 
Fig. 4. Fig. 5. 
The remainder of the book is mostly taken up with Descriptive 
Petrology, chiefly of the Eruptive rocks, while a few pages at the 
end are devoted to those of a Sedimentary nature. 
The book must find a place as a good practical text-book of 
Petrology, and its perusal is sure to save the student many hours 
of labour which are often wasted when he receives no extraneous 
aid. 
NOTICES OF MEETINGS. 
CHESTER SOCIETY OF NATURAL SCIENCE.—We have received 
the ninth Annual Report of this Society for the years 1879-80, from which it 
appears to be in a very flourishing condition. The chairman of the Micros- 
copical Section is Dr. H. Stolterfoth, M.A. (who is also the Scientific Secretary 
of the parent Society) ; the Secretary of the section being Mr. J. D. Siddall. 
The work of the Society seems to be the organization of 
I. Excursions. 
Evening walks. 
Conversazione. 
General Meetings. 
Sectional Meetings. 
6. Classes for Instruction. 
The Annual Conversazione took place on 2nd October, 1879, in the Town Hall, 
and was one of the most successful ever held by the Society. We learn that a 
classified arrangement of objects shown under the Microscopes was furnished in 
the programme, and that the Society was aided by the Liverpool and Wrexham 
Societies. 
The proceedings of all the Sections seem to contain matter of interest to the 
Microscopist, and therefore we extract the following from the report :— 
awd 
