THE CANADIAN YEAE BOOK. 
145 
Alternate accumulation of motion, and extinction of motion 
results when periods disagree. 
Unlimited accumulation would result when periods concur, but 
for friction and keel resistance. 
Primary aspect of these conditions is that diminution of '* stiff- 
ness" produces ''steadiness." 
Limits to the application of this principle. 
Other modes of limiting oscillation; namely, by increasing 
" friction " and keel resistance." 
Eapid extinction of a ship's oscillations in still water a criterion 
of her probable steadiness in sea-way. 
Comparison between large and small waves. 
Summary of results and general reflections. 
THE CANADIAN YEAE-BOOK. 
PBOGEAMME OF ME. EOOKEE's PAPEE. 
(Read March 9tli, 1871.) 
The British possessions in North America, and their political dis- 
tribution. 
The discovery of Canada, and its colonization. 
The Hudson's Bay Company, and its territory. The recent con- 
stitution of the dominion, and its Federal Government. 
Scenery in Canada — its great rivers, lakes, and waterfalls. 
The public works, railways, canals, timber slides. The trade of 
Canada, its climate, and agriculture. Education and emigration. 
The future of our colonial empire. 
