May 20. They have found that a lock of six _pieds_ is best; however, eight _pieds_ is well enough. Beyond this, it is bad. Monsieur Pin tells me of a lock of thirty _pieds_ made in Sweden, of which it is impossible to open the gates. They therefore divided it into four locks. The small gates of the locks of this canal have six square _pieds_ of surface. They tried the machinery of the jack for opening them. They were more easily opened, but very subject to be deranged, however strongly made. They returned, therefore, to the original wooden screw, which is excessively slow and laborious. I calculate that five minutes are lost at every basin by this screw, which, on the whole number of basins, is one eighth of the time necessary to navigate the canal: and of course, if a method of lifting the gate at one stroke could be found, it would reduce the passage from eight to seven days, and the freight equally. I suggested to Monsieur Pin and others a quadrantal gate, turning on a pivot, and lifted by a lever like a pump-handle, aided by a windlass and cord, if necessary. He will try it, and inform me of the success. The price of transportation from Cette to Bordeaux, through the canal and Garonne is ------ the quintal: round by the straits of Gibraltar is ------. Two hundred and forty barks, the largest of twenty-two hundred quintals (or say, in general, of one hundred tons), suffice to perform the business of this canal, which is stationary, having neither increased nor diminished for many years. When pressed, they can pass and repass between Toulouse and Beziers in fourteen days; but sixteen is the common period. The canal is navigated ten and a half months of the year: the other month and a half being necessary to lay it dry, cleanse it, and repair the works. This is done in July and August, when there would perhaps be a want of water. May 21. _Baziège. Toulouse_. The country continues hilly, but very rich. It is in mulberries, willows, some vines, corn, maize, pasture, beans, flax. A great number of chateaux and good houses in the neighborhood of the canal. The people partly in farm-houses, partly in villages. I suspect that the farm-houses are occupied by the farmers, while the laborers (who are mostly by the day) reside in the villages. Neither strawberries nor pease yet at Baziege or Toulouse. Near the latter are some fields of yellow clover.