ORDINARY MEETINGS. xlix 
FourtH Orpinary MEertina. 
City Council Chamber, Halifax, 12th February, 1900. 
The PresipEnt in the chair. 
A paper entitled : “ Nova Scotian Minerals collected for the Paris 
Exhibition,” was presented hy Epwin Ginpin, Jr., Esq., Lu. D., F. R. 
S. C., Inspector of Miues. Dr. Grupin answered a number of inquiries 
made by those present, relative to the minerals of the Province. (See 
Transactions, p. 248.) 
A communication by Henry S. Poon, Esa, F. G. S., entitled 
“Notes on the Periodical Appearance of Ants in a Chimney, and on 
an Unusual Site for a Humble-Lee’s Nest,” was read by the Recorpine 
SECRETARY in the absence of the author, as follows: 
‘“* For many years, possibly fifteen, a flight of ants has annually 
tumbled down a chimney in the office of the Acadia Coal Co., at 
Stellarton, N. S., generally on August 24th, sometimes a day or two 
later, and occasionally a few ants again appear as late as the middle of 
September. Fires are used in the chimney each winter. A tinned roof 
has been put on the office since the ants first were seen, and the top of 
the chimney has been thoroughly repaired by masuns without finding a 
nest. The habitat selected seems unusual, and so far has not Jed to the 
similar adoption by colonies of other chimneys in the same building. 
“In a grove of young fir trees, about eight feet from the ground, I 
noticed one autumn a large robin’s nest in unusually good repair. On 
pulling down the tree-top the nest was found to be full, with a dome 
shaped cone. It was occupied by humble-bees and a small comb with 
larve in it. Such a situation for a humble-bees’ nest, 1 am told, has 
been seen before, but apparently it is unusual.” 
Firra Orpinary Meertine. 
City Council Chamber, Halifax, 12th March, 1900. 
The PresIpENT in the chair. 
It was announced that CHaries Pickrorp, Esq@., had been elected a 
Corresponding Member. 
A paper by C. M. Passa, Esq., of Dalhousie College, ‘‘ On a relation 
between the Ionization Coefficients of Electrolytes, and its application 
as an Interpolation Formula,” was presented by Dr. J. G. MacGrecor. 
