xvi PROCEEDINGS—PERTHSHIRE SOCIETY OF NATURAL SCIENCE. 
Manse; Mr. Wm. M‘Quibbon, Main Street; Mr. Arthur Folkarde, 
2 David Street, Blairgowrie; Mr. James Reid, Allan House, Blair¬ 
gowrie ; Dr. Robertson, Murthly; Mr. Orkney, Clerk of Works, 
Craigie; Mr. John Alexander, M.A., Sharp’s Institution; Mr. James 
Robertson, Mansfield Place; and Mr. Alfred Brown (of Messrs. 
Dickson & Turnbull’s, George St.), were elected Ordinary Members. 
The following donations were intimated 
Museum — Perthshire Collection .—Peregrine Falcon from Loch 
Kennard—from Mr. R. MTntosh. Squirrel—from Miss Grace 
Morrison, Crieff. Two Blue Rabbits—from Mr. Athole M‘Gregor. 
Fossils—from Mr. James Reid, Blairgowrie. Index Collection — 
Shells, Butterflies, Silk Cocoons, and Specimens of Wood from the 
Andaman and Nicobar Islands—from Mrs. Pryce. Reptiles and 
Insects—from Rev. P. A. Gordon Clark. Fossils and Echinae— 
from Rev. F. Smith. Fossil Brachiopods from the Lias, Leicester¬ 
shire—from Mr. W. Ellison. 
Library .—Eight Vols. “Scottish Geographical Magazine”—from 
Mr. Andrew Coates. “A Monograph of the Yellow Sandstone of 
Dura Den ’’—from Mr. Henry Coates. 
The Rev. H. Armstrong Hall delivered a lecture on “ The 
Modern Microscope and Recent Bacteriological Investigation.” 
nth January, 1894. 
Henry Coates, F.R.S.E., President, in the Chair. 
Mr. Davidson, Manager of the Water Commission, exhibited, and 
presented to the Society, a Diagram showing the various Strata of a 
boring recently made on Mugdrum Island. 
Dr. Buchanan White exhibited a Snowdrop in flower. 
The following papers were read :— 
1. “Note on an Outcrop of Diabase at Rossie Priory.” By 
Robert Dow. (See Trans., Vol. II., p. 1). 
2. “ On the Chemical Composition of the Tay Water.” * By 
Dr. Andrew Thomson, M.A., F.C.S., F.R.S.E., and D. Ferrier. 
3. “How Cast-Iron Pipes are affected by Water.” By John 
Young, C.E. 
* To be published in Vol. II. of the Transactions as one of the series of papers on 
the Natural History of the Banks of the Tay. 
