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Immunology is a branch of MEDICINE that studies the body's ability to defend itself from foreign substances, cells and tissues, especially DISEASE-causing organisms, and seeks means of controlling that ability.

The Miramichi Lumber Strike began 20 August 1937 when 1500 millworkers and longshoremen along the Miramichi River in northern New Brunswick struck 14 lumber firms for increased wages, shorter working hours and union recognition.

Spiraea is a genus of small shrubs of the family Rosaceae (rose). The genus consists of some 70-80 species, as well as many horticultural varieties of garden origin that have resulted from hybridization. Probably the most noteworthy of these hybrids is S.

 Squirrel, common name for family (Sciuridae) of rodents, comprising 262 species, found in North and South America, Eurasia and Africa.

Stagflation, the combination of high unemployment and high rates of INFLATION. Prior to the late 1960s, variations in economic activity were caused primarily by "demand shocks" (fluctuations in aggregate demand or total expenditure).

Staple Thesis, a theory asserting that the export of natural resources, or staples, from Canada to more advanced economies has a pervasive impact on the economy as well as on the social and political systems.

The first SAILING SHIPS built in what is now Canada were 2 small craft launched at PORT-ROYAL, Acadia, by François Gravé du Pont in 1606. The first recorded seagoing vessel, Galiote, was built in NEW FRANCE in 1663.

Silica, or silicon dioxide (SiO2), occurs as the MINERAL quartz and is the most abundant mineral of the Earth's crust. It also occurs in the skeletal parts of some animals (eg, certain protozoa) and various plants.

Silviculture is the branch of FORESTRY that deals with establishing, caring for and reproducing stands of trees for a variety of forest uses including wildlife habitat, timber production and outdoor recreation.

Traditionally the difference between small press publishers and trade publishers has been one of scale, purpose and ideology. Trade publishers are entrepreneurs with large operations, comprising many departments and geared to market books that will be profitable.

In 1961, fragments of a human infant skull from were recovered from the banks of the Oldman River near Taber, Alberta.

The Tantramar marsh is one of four saltwater tidal marshes covering 20,230 ha on the narrow Chignecto Isthmus that connects New Brunswick and Nova Scotia.

Taxation, Royal Commission on, under Kenneth Carter, appointed (1962) by PM John Diefenbaker to examine and to recommend improvements to the entire federal TAXATION system.

Sulpicians, society of diocesan priests founded in Paris in 1641 by Jean-Jacques Olier de Verneuil to put into practice the decisions of the Council of Trent (1545-1563) concerning the formation of diocesan clergy.

Snail, common name for members of several groups of gastropod molluscs. Snails inhabit all moist habitats, but most forms are marine.

Soaring, or gliding, is the sport of flying a sailplane or glider for a sustained period of time by utilizing currents of rising air to stay aloft.

The earliest athletic body organized to administer sport was the Montreal Amateur Athletic Association (MAAA). Formed in 1881, it comprised clubs for lacrosse, swimming and bicycling. The first national organization was the Amateur Athletic Association of Canada, founded in 1884.

Sociology is the study of human relationships, the rules and norms that guide them, and the development of institutions and movements that conserve and change society.