Adverb Clause — Continued

	Lesson 65 (p. 115)	The adverb clause may express condition.
Exercises (Lesson 65: adverb clause—continued) Diagram the following:
1. If the air is quickly compressed, enough heat is evolved to produce combustion. 2. Unless your thought packs easily and neatly in verse, always use prose. 3. If ever you saw a crow with a kingbird after him, you have an image of a dull speaker and a lively listener.
4.	Were it not for the warm waters of the Gulf Stream, the harbors and the rivers of Britain would be blocked up with ice for a great part of the year.	Explanation.— The relative position of the subject and the verb renders the if unnecessary. This omission of if is a common idiom.
5. Should the calls of hunger be neglected, the fat of the body is thrown into the grate to keep the furnace in play.
	Lesson 65 (p. 116)	The adverb clause may express purpose.
6.	Language was given us that we might say pleasant things to each other.	Explanation.— That, introducing a clause of purpose, is a mere conjunction. Here it introduces a noun clause with the so of purpose being omitted.
7.	Spiders have many eyes in order that they may see in many directions at one time.	Explanation.— The phrases in order that, so that = that. Here again the noun clause saves the day so that syntax may be preserved over semantics.
8. The ship canal across the Isthmus of Suez was dug so that European vessels need not sail around the Cape of Good Hope to reach the Orient. 9. The air draws up vapors from the sea and the land, and retains them dissolved in itself or suspended in cisterns of clouds, that it may drop them as rain or dew upon the thirsty earth.
	Lesson 65 (p. 116)	The adverb clause may express concession.
10. Although the brain is only one fortieth of the body, about one sixth of the blood is sent to it. 11. Though the atmosphere presses on us with a load of fifteen pounds on every square inch of surface, still we do not feel its weight. 12. Though thou shouldst bray a fool in a mortar, yet will not his foolishness depart from him.
13.	If the War of the Roses did not utterly destroy English freedom, it arrested its progress for a hundred years.	Explanation.— If here = even if = though.
14. Though many rivers flow into the Mediterranean, they are not sufficient to make up the loss caused by evaporation.
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