A second letter to a friend giving a more particular narrative of the defeat of the French army at Lake-George, by the New-England troops, than has yet been published: representing also the vast importance of this conquest to the American-British-colonies. : To which is added, such an account of what the New-England governments have done to carry into effect their design against Crown-Point, as will shew the necessity of their being help'd by Great-Britain, in point of money.