186 Conjectures concerning the Cause, and Observations 
at the Royal Institution, and has in the last year published the 
same in an Svo volume. The conduct of the gentleman now 
alluded to, has even been still worse towards my friend Mr. 
Smith, whose Geological Map has been in the Institution Li- 
brary since its publieation, and during the delivery of several of 
the Lectures alluded to, was actually Aung up al the back of the 
Lecturer, and made the diagram of his local descriptions of 
English Mineralogy and Geology; and yet, in two volumes which 
this “ learned Professor ”’ has since put forth, in 1816 and 1817, 
detailing the Geological facts of England, not the least mention 
or allusion is made to Mr. Smith or his labours, through the Jast 
28 years! ! 
If no one else can be found to stand forward, and condemn 
with just severity, such gross léterary injustice, as 1s displayed 
in the instances above alluded to, I am the person who will fear- 
lessly do so, as long as your work remains, as heretofore, the 
impartial vehicle of scientific communication ; and I am, sir, 
Your obedient servant, 
Howiland-street, Aug. 16, 1818, Joun Farry Sen. 
Conjectures concerning the Cause, and Observations upon the 
Phenomena, of Earthquakes; particularly of that great 
Earthguake of the first of November 1755, which proved so 
fatal to the City of Lisbon, and whose Effects were felt as 
far as Africa, and more or less throughout almost all Europe ; 
by the Rev. Joan Micue.t, M.A. Fellow of Queen’s College, 
Cambridge. [From the Philosoph, Transactions *.] 
Introduction. 
Art.1. Ir has been the general opinion of philosophers, that 
earthquakes owe their origin to some sudden explosion in the 
internal parts of the earth. This opinion is very agreeable to the 
phenomena, which seem plainly to point out something of that 
kind. The conjectures, however, concerning the cause of such 
an explosion, have not been yet, I think, sufficiently supported by 
facts; nor have the more particular effects, which will arise from 
it, been traced out; and the connexion of them with the phe- 
nomena explained. ‘To do this, is the intent of the following 
pages; and this we are now the better enabled to do, as the late 
dreadful earthquake of the Ist of November 1755 supplies us 
with more facts}, and those better related, than any other earth- 
quake of which we have an account. 2. That 
* Read Feb. 28; March 6, 13, 20, 27, 1760. Had 
+ Many of these facts are collected together in the xlixth volume of the 
Philosophical Transactions, The same are also to be found, with some ad- 
ditional 
