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 We have heard otmany accidents at- tending the navigation of the Mississip- pi and Ohio rivers, during the present season of low water, ans! e.!.:: ::s!y, :. {. q loss to account for them. Some attrib- ute them to the unusually low stage of the water-others changesin the chan nel, and few to the circumstances of the snags being cut down te the waters edge and remaining concealed under it.

 Some ten days since keel boat, from Louisville, struck snag, in the Canada an Reach, and went down instantly. with a valuable cargo ofcotton bagging, bale rope, powder and other articles of aP country produce, Il large portion Of which was consigned to this place. X few weeks previously, a similar accident happened to another keel boat, also des- tined for this place; and a gentleman who came passenger in one off the steam boats from the mouth of Ohio, informs us, that he had heard of not less than for ty keel and fiat boats being wrecked be- tween this place and Louisville during the last three months.-.4dvocate.