1899] Conversazione. 235 



Behiing Sea Plants Mr. James M.Macoun. 



Indigenous Trees and Slirubs Mr. \Vm. T. Maconn. 



Silver Bear, Skeena River Country, B.C., and a 



Rockiii<^ Microtome Prof. E. E. Prince. 



Weathered Rock illustrating old Devonian sea bottom .Dr. H. M. Ami. 



Specimens of Bones and Skull from Klondike gravels, col- 

 lected by Wm. Ogilvie, Esq " 



Shells, Fruits and interesting collections from Jamaica .Mr. \V. S. Odell. 



Tropical Shells Mr. Andrew Halkett. 



The east end of the Hall was occupied by a long table, where the 

 following gentlemen exhibited various objects of special interest 

 under the microscopes : Professor Prince, Mr. Kemp, Dr. Dawson, 

 Mr. W. J. Wilson, Dr. Fletcher, Mr. Walter S. Odell (living 

 organisms,) Mr. F. T. Shutt and Dr. Ami. Electric drop-lights 

 aUached to ornamental lamps with opal shades, kindly furnished by 

 the Ottawa E'ectric Co., afforded excellent light for the instruments on 

 the table. 



The central portion of the floor was occupied by the projection 

 microscope and science lantern from which numerous microscopic pre- 

 parations themselves were exhibited on the screen magnified many 

 thousand times. This part of the programme proved very attractive 

 inasmuch as the whole audience could see at one glance the same 

 microscopical object or preparation projected on the screen, whereas in 

 the case of the table microscope only one person could examine any 

 one slide or object at a tmie. 



Shortly alter His Excellency's arrival, Prof. Macoun described the 

 various kinds of Squirrels known in Canada,* after which Dr. Ami pro- 

 jected some thirty preparations on the screen, including palate of 

 whelk, palate of snail, proboscis of blowfly, oak saw-fly, flea from white 

 mouse, mosquito, larva of mosquito, deep sea dredgings (H.M.S. Chal- 

 lenger) scales of body of a moth, cross-section of spine of Echinus, 

 stellate hairs from the leaf of Deutzia, cross-section of hairs of elephant, 

 deer, and other animals, &c., &c, 



Dr. G. M. Dawson then gave a very interesting and instructive 

 address on " The remarkable landslip on the Riviere Blanche, County 

 Portneuf, Que." An abstract of this paper, which was well received, 

 appeared in the January issue of The Naturalist, pp. 194-195, 

 Prof. Macoun concluded the papers of the evening by a graphic dis- 

 sertation (illustrated with lantern slides) on the forest trees of Canada, 

 showing what glorious possibilities of (^t^iUy the Dominion possessed. 



*We hope to be able at some future date to give the readers of The OTTAWA 

 Naturalist an abstract of Prof. Macoun's address. — The Editor. 



