Proceedings, &c., 1867. 323 
Enquiry Society of Ireland,” Part III, Vol. IV. ‘Schriften der 
Naturferschenden Gesellschaft in Danzig.” ‘‘ Results of Astrono- 
mical Observations made at the Melbourne Observatory.”  “ Sur 
la Structure de la Houille Commentarie des Phytographies et des, 
Eixemplaires que fait figurer a l’Exposition Universelle de Paris,’— 
by Dr. Goeppert. 
Mr. H. A. Thompson read a paper, “ On the Formation of Mineral 
Veins, and the Deposit of Metallic Ores in them.” 
Professor M‘Coy took exception to the view put forward by Mr. 
Thompson, quoting the authority of the late Mr. Hopkins, of Cam- 
bridge, on the origin of fissures. The Professor contended that the 
fissures remained open until they were filled by igneous or aqueous 
means. | 
Mr. Newbery and Mr. Aplin took part in the discussion, the latter 
gentleman quoting largely from the work of Mr. ‘Sterry Hunt, of the 
Quebec Geological Survey, which bore out the views taken by Mr. 
Thompson. 
In reply, Mr. Thompson thought Professor M‘Coy had mistaken 
the sections for vertical in place of horizontal ones. From personal 
experience Mr. Thompson was aware of the difficulty of keeping the 
fissures open. The Old Man Vein opened out to 120 feet wide, and 
how could a large cavity like this in soft rocks remain open? Many 
of these veins only a few feet wide could not be kept open for six 
weeks. The subject was of great importance, and his theory had 
not been weakened by the discussion on his paper. 
(Signed) Rost. WILLAN. 
9th September, 13867. 
ORDINARY MEETING. 
Monday, 9th September, 1867. 
The Hon. Treasurer, Robert Willan, Esq., in the chair. 
The foliowing contributions were announced :—“ Flora Austra- 
liensis,” Vol. ILI; and “ Flora Braziliensis,” Parts 1 to 4,—presented 
by Dr. Mueller. 
Mr. H. K. Rusden read a paper, ‘‘ On the Ethics of Opinion.” 
Professor Halford, by permission, called the attention of the 
Society to his paper read at a former meeting, ‘‘ On the condition of 
Blood after death from Snake-bite and Cholera ;’ and stated that, the 
_ question being of great importance, he had been desirous of getting 
Australian snakes to ascertain if the blood of what might die from 
the effect of their bites was the same in appearance with his pre- 
viously ascertained results. Last week a number of tiger snakes had 
been received from Dr. Gummow, of Swan Hill, to whom he was 
greatly indebted for this act of kindness, and with these, operations 
had been performed, The dog bitten had died in three hours. 
‘ 
