When a driver approaches a neutral section separating sections of 25 kV. and 15 kV. overhead catenary, he trips the main circuit-breaker but keeps his pantographs up; as soon as the next section of live wire is reached, he re-sets his contact-breaker, whereupon voltage-sensitive relays automatically make appropriate connections to the auxiliary circuits.

Rip now resumed his old walks and habits; he soon found many of his former cronies, though all rather the worse for the wear and tear of time; and preferred making friends among the rising generation, with whom he soon grew into great favour.

Fortune, however, to-night seemed resolved on making full amends to a beauty cut short in the first flush of success, and sent to waste two of her prettiest years in the dull seclusion of an old house in the country. What blooming simplicity! exclaimed Lord Townshend. Positive milk of roses! exclaimed Lady Mary Wortley Montague: but the sneer passed unheeded; and Lord Townshend, crossing the room, entreated Mrs. Courtenaye to present him to her lovely young friend.

Some dwarf boas and erycines climb occasionally, and arboreal specializations have evolved independently in Green Pythons (Morelia viridis), Pacific Tree Boas (C. bibronii), neotropical tree boas (Corallus), and Vine Boas (Epicrates gracilis).