a 
ANNIVERSARY ADDRESS OF THE PRESIDENT. Ixxix 
cumulated in them, are well-known to this Society, not only as 
having a scientific but a practical bearing. All investigations of this 
kind, therefore, which can be carried out by competent persons in 
the mining districts of Devon and Cornwall, will necessarily be im- 
portant, and it is to be hoped that the Transactions of the Geological 
Society of Cornwall may be enriched by many communications on 
this subject. 
Mr. Henwood sent a note on the detrital gold deposits of Brazil, 
in which the author points out the differences between the characters 
of the ‘diluvial and alluvial’ gold of that country, comparing the 
former with the stream tin of Cornwall. Respecting the last a com- 
munication was made by Mr. Pearce. 
The MAncHESTER GEOLOGICAL Society has existed for ten years. 
One of the chief purposes of its foundation was “‘to mquire into the 
statistics and machinery of mining, and to collect books, maps, models, 
sections and mining records, to be registered and preserved in a public 
depositary for the use of posterity, and to direct them where their 
researches may be most successfully and securely carried on.’ This 
object of the Manchester Geological Society has not been attaimed ; 
and though every encouragement “has been given to papers connected 
with the district, the proceedings of the Society have tended more 
to advance a general knowledge of geology as a science, than to 
elucidate the geological features of the district. The museum of the 
Society has rapidly augmented, and it is stated that the visitors to 
it have increased in 1846 and 1847, as compared with 1845, at the 
rate of 60 and 80 per cent. respectively. The communications made 
to this Society during the year ending the 28th October, 1847, 
were—‘ On some Main Lines of Fault traversing Cheshire,’ by Mr. 
Ormerod ; ‘On Modern Geology and its Fallacies,’ by Dr. Sleigh ; 
‘Observations on the Primzeval Condition of Matter composing the 
Crust of the Globe,’ by Mr. Jobert ; ‘An Eclectic View of the Coal 
Formation,’ by Dr. Black ; ‘An Account of the Coal-fields of Derby- 
shire and Yorkshire,’ by Mr. Elias Hall; and ‘On the Coal of the 
River Coti, east coast of Borneo,’ by Mr. Bellot. 
The GrotocicaL Society oF THE West Ripine or Yor«k- 
SHIRE still continues; and a paper on a new Safety Lamp, by the 
secretary, Mr. Thorp, has lately been read before it. It has pub- 
lished several communications, among the rest one by Mr. Thorp on 
the Yorkshire coal-field, and another by Professor John Phillips, 
on the ‘ Microscopic Texture of Rocks.’ 
PALZONTOGRAPHICAL SOCIETY. 
To the list of Societies instituted in this country for the cultiva- 
tion and diffusion of geological knowledge, we have to add the 
PALZONTOGRAPHICAL Society, formed during the past year, upon 
the principle of the Ray, the Hakluyt and other societies of that 
class, the members of Which receive publications for their annual 
subscriptions in greater or less amount according to the total number 
of members, and consequently according to the amount of the 
