As to the signs of the times and the aspect of affairs among the nations of Europe, dark forebodings of the future seem to pervade all hearts, and the heads of the nations seem to be conscious that they are steering the ship of State in DANGEROUS SEAS. Denmark is at present the point of the greatest interest. The Dukedoms of Holstein and Sleswick, which are mostly German, have been in a state of REVOLT ever since the death of the old king. The new government has been unable to compel their submission. Several severe battles have been fought, and both parties still seem to be more and more desperate. On the 23rd and 24th July, a battle was fought in Sleswick, in which out of about 30,000 engaged on EACH SIDE, they sustained a loss of about 4000 EACH, according to their acknowledgments; but as the official reports have been kept from the public, it is generally believed that the loss was much greater. Over 3000 wounded were brought to this city, and all the hospitals had the appearance of slaughter-houses and the surgeons, butchers. Considered by itself alone, this domestic war might not disturb the peace of Europe; but there is a secret at the bottom, which interests the great powers. By a glance at the map, you will see that Denmark's stronghold at Elsinore holds the key to the Baltic, and taxes all nations who traffic upon her waters. This is an outlet for the Russian fleet, and for the commerce of Prussia and other German States, as well as Sweden. The German States, including Prussia, are aiming to establish a FEDERAL UNION, and to build a fleet, that they may be able to compete with the great powers of Europe. Sleswick and Holstein are essential to that union on account of their harbors upon the North Sea for their fleets. They being Germans, are like minded, and wish to throw off the Danish yoke; in doing which they have the support of all Germany. * * * * Since I commenced writing this letter, the postman has brought me one from brother J. Forssgren, dated Stockholm, Aug. 13th, of which I will give you a summary. He says he baptized his brother and sister, and one or two others at Geffle; and by request translated brother O. Pratt's pamphlet on the rise and doctrine of the Church; but the printers refused to publish it. He next heard of a ship load of farmers about to sail for New York, and went to them, and while they were waiting for the vessel, he preached the gospel to them, and found them a humble people, who were looking for the redemption of Israel, and were going to seek for Zion in America.