There are not as yet, and for a long time there cannot be, any full Government reports of the amount and kind of sickness in the present army of the United States. But the excellent reports of the inquiries of the Sanitary Commission give much important and trustworthy information in respect to these matters. Most of the encampments of all the corps have been examined by their inspectors; and their returns show, that the average number sick, during the seven months ending with February last, was, among the troops who were recruited in New England 74.6, among those from the Middle States 56.6, and, during six months ending with January, among those from the Western States 104.3, in 1,000 men. From an examination of 217 regiments, during two months ending the middle of February, the rate of sickness among the troops in the Eastern Sanitary Department was 74, in the Central Department, Western Virginia and Ohio, 90, and in the Western, 107, in 1,000 men. The average of all these regiments was 90 in 1,000. The highest rate in Eastern Virginia was 281 per 1,000, in the Fifth Vermont; and the lowest, 9, in the Seventh Massachusetts. In the Central Department the highest was 260, in the Forty-First Ohio; and the lowest, 17, in the Sixth Ohio. In the Western Department the highest was 340, in the Forty-Second Illinois; and the lowest, 15, in the Thirty-Sixth Illinois. On the 22d of February, the number of men sick in each 1,000, in the several divisions of the Army of the Potomac, was ascertained to be,-- | Keyes's, | 30.3 | | Sedgwick's, | 32.0 | | Hooker's, | 43.7 | | McCall's | 44.4 | | Banks's, | 45.0 | | Porter's, | 46.4 | | Blenker's, | 47.7 | | McDowell's, | 48.2 | | Heintzelman's | 49.0 | | Franklin's | 54.1 | | Dix's, | 71.8 | | United States Regulars,| 76.0 | | Sumner's, | 77.5 | | Smiths's, | 81.6 | | Casey's | 87.6[34] |