Constitutional Whig

From the Boston Daily Advertiser.

CHOLERA AT ST. PETERSBURG.—We have been favored with the following extract from a letter to a gentleman of this city, dated St. Petersburg, July 13th.

"The Cholera Morbus has taken most dreadful hold of us here. From the 27th ult. to the 10th inst. there were 2850 cases, and during the last three days certainly not less than 550 to 600 daily, with hardly a single cure; and the physicians are of opinion that it will go on increasing during the warm months. I made up my mind to quit the city and go down to Copenhagen; but now there will be no possibility of this. A cutter is cruising off Bornholm to prevent vessels coming nearer the shore than necessary, two Swedish brigs to prevent landing on their coast, and no one is allowed to go on shore at the Sound. The above data as to numbers attacked are from the official reports; and I have no idea that they comprehend all who have fallen victims to the disease; for many sick have wished to conceal the fact from the public authorities, fearing an interference of the Police. We have reason to fear that the vessels which arrive hereafter will be subject to great detention; for nearly 20,000 Russians, mostly laborers, have this week taken out their passes to leave the city; the working Russians at Cronstadt are so frightened that I should not, at any moment, be surprised to learn that they refused to labor on board the ships. It is unusual to walk through the streets, which are comparatively deserted: the Imperial Family, the Cadets, and nearly all, who are masters of their own movements, having left the city.— Every individual whom one meets, looks anxious as if expecting that his turn would come next: we are unwilling to leave our houses without company."

Another letter states that the cholera had attacked the shipping. The captain, second mate, and several seamen had died from the American ship Heroine: and on board the Nye.