The main road system, which dates from 1828, previous to which there were only tracks, is good, and the roads well engineered; many of them are traversed daily by post vehicles.
The work of Farel, previous to his coming to Geneva, was almost entirely evangelistic, and his first work in Geneva was of a similar character.
Only faint outlines can be traced of the condition of Rajputana previous to the invasion of Upper India by the Mahommedans, and these indicate that the country was subject for the most part to two or three powerful tribal dynasties.
The instrument was described in over fifty publications 6 in various countries, and was well known to physicists previous to Bell's introduction of the electric telephone as a competitor with the electric telegraph.
Some idea of his activity as a writer on mathematical and physical subjects during these early years may be gathered from the fact that previous to this appointment he had contributed no less than three important memoirs to the Philosophical Transactions of the Royal Society, and eight to the Cambridge Philosophical Society.
