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Cones: Light receptors in primates eyes that operate in bright light; provide color vision and visual acuity.

Stress Cones: A physical protection placed over the external connections point on medium and high voltage motor leads. Stress cones are used to avoid di-electric breakdown of motor leads in the vicinity o . . . View Full Definition

Noble Fir: In the wild, the trees are tall, beautifully symmetrical and grow to over 200 feet in height. The bark is smooth with resin blisters when young and changes to brownish-gray plates with age. . . . View Full Definition

Norway Spruce: Norway spruce is one of the most important species on the European Continent. More than 100 forms and varieties have been named. Although not native to the Western hemisphere, the species an . . . View Full Definition

Grand Fir: The grand fir is one of the tallest firs, reaching heights of 300 feet. It is easily distinguished from other Pacific Northwest firs by its sprays of lustrous needles in two distinct rows. T . . . View Full Definition

Eastern White Pine: Beginning with the British colonists, eastern white pine (or white pine) has proven to be one of the most important and most desirable species of North America. It is a truly magnificent tre . . . View Full Definition

Eastern Red Cedar: The branches of the eastern redcedar are compact and form a pyramidal crown, except in older trees. The leaves are usually arranged in opposing pairs along the branchlets. They are a dark sh . . . View Full Definition

Scotch Pine: Scotch or Scots pine is an introduced species which has been widely planted for the purpose of producing Christmas trees. It is an extremely hardy species which is adaptable to a wide variet . . . View Full Definition

Fraser Fir: In many respects, Fraser fir and balsam fir are quite similar, although the geographic ranges of the two species do not overlap. Some scientists even suggest that because of the many similar . . . View Full Definition

White Spruce: White spruce is a medium-sized conifer found in northeastern United States and throughout Canada. It is the state tree of South Dakota. White spruce has a cone-shaped crown, and when grown i . . . View Full Definition