He proceeds with his plan to seduce Terezinha by purchasing a canary for her, which she accepts.
Through the 19th and early 20th centuries, coal miners would bring canaries down to the tunnels with them as an early detection system against life threatening gases such as carbon dioxide, carbon monoxide and methane.
This house was once owned by George Ward who had a canary.
His corpse was left in the trunk of his car with a canary stuffed in his mouth because Casso suspected him of being a government informer.
The pellistor was developed in the early 1960s for use in mining operations as the successor of the flame safety lamp and the canary.
The flowers are 2–4 cm diameter, with five frilled petals, bright pale yellow (canary-coloured, hence the English name), often with red spots at the base of the petals, eight stamens, and a 12 mm nectar spur at the rear.
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Thus, like a canary in a coal mine, researchers can examine stream hydropsychid populations to assess stream health (see EPT or Index of biological integrity).