change takes place on the surface of the water, and if at the moment that the insect first spreads its wings the water is not perfectly still and the air calm, it will be inevitably destroyed; at those parts of the lake, therefore, which are most exposed, and where the water is often agitated, no such thing as a musquito is ever seen; neither are they ever found along a large and rapid river, where the shores are lofty and dry; but in the neighbourhood of marshes, low grounds, and stagnant waters, they always abound. Musquitoes appear to be particularly fond of the fresh blood of Europeans, who always suffer much more the first year of their arrival in America than they do afterwards. The people of the country seem quite to disregard their attacks. Wherever they fix their sting, a little tumor or pustule usually arises, supposed to be occasioned by the fermentation, when mixed with the blood, of a small quantity of liquor which the insect always injects into the wound it makes with its spicula, as may be seen through a microscope, and which it probably does to render the blood more fluid. The disagreeable itching this excites is most effectually allayed by the application of volatile alkali; or if the part newly stung be scratched and immediately bathed in cold water, that also affords considerable relief; but after the venom has been lodged for any time, scratching only increases the itching, and it may be attended with great danger. Repeated instances have occurred of people having been laid up for months, and narrowly escaping the loss of a limb, from imprudently rubbing a part which had been bitten for a long time. Great ease is also derived from opening the pustules on the second day with a lancet, and letting out the blood and watery matter. ------------------------------------------------------------------------ +LETTER + XXI. _Embark on Lake Champlain.—Difficulty of procuring Provisions at Farms bordering upon it.—Ticonderoga.—Crown Point.—Great Beauty of the Scenery.—General Description of Lake Champlain and the adjacent Country. Captain Thomas and his Indians arrive at Crown Point.—Character of Thomas.—Reach St. John’s.—Description of that Place.—Great Difference observable in the Face of the Country, Inhabitants, &c. in Canada and in the States.—Chambly Castle.—Calashes.—Bons Dieux.—Town of La Prarie.—Great Rapidity of the River Saint Lawrence.—Cross it to Montreal.—Astonishment on seeing large Ships at Montreal.—Great Depth of the River._ Montreal, July. [Sidenote: LAKE CHAMPLAIN.]