Dunderburg 10 guns, 5,019 tons. Dictator 2 " 3,033 " Monadnock 4 " 1,564 " Miantonimah 4 " 1,564 " Agamenticus 4 " 1,564 " Canonicus 2 " 1,034 " Manhattan 3 " 1,034 " Mahopac 2 " 1,034 " Manayunk 2 " 1,034 " Catskill 2 " 844 " Camanche 2 " 844 " Lehigh 2 " 844 " Montauk 2 " 844 " Nantucket 2 " 844 " Nahant 2 " 844 " Patapsco 2 " 844 " Passaic 2 " 844 " Sangamon 2 " 844 " Weehawken 2 " 844 " Moodna 2 " 677 " Marietta 2 " 479 " Sandusky 2 " 479 " IRON CLAD RIVER GUNBOATS--12 Catawba 2 guns, 1,034 tons. Tippecanoe 2 " 1,034 " Chickasaw 4 " 970 " Kickapoo 4 " 970 " Milwaukee 4 " 970 " Winnebago 4 " 970 " Tuscumbia 3 " 565 " Ozark 2 " 578 " Osage 2 " 523 " Neosho 2 " 523 " Indianola[8] 2 " 442 " Chillicothe 2 " 303 " The most formidable class of these unfinished vessels are the iron-clad gunboats. Of these are four of immense size, viz., the Puritan, Tonawanda, Tecumseh, and Onondaga. The mammoth iron-clad of all is the enormous Dunderburg, carrying 10 guns of from fifteen to twenty inches in calibre, and having a tonnage of 5,019 tons. The Dictator is another immense iron-clad. Of the river Gunboat Fleet, the Catawba and Tippecanoe stand as first class, carrying heavy nine and eleven inch Dahlgren guns. The building of these ocean iron-clads is at the following places: Nine of them are building at New York; three at Brooklyn; one at Portsmouth; two at Jersey City; four at Boston; two at Chester; two at Pittsburgh; one at Brownsville, Pennsylvania; and one at Wilmington, Delaware. The river iron-clads are built at the following places: Five at Cincinnati; six at St. Louis; and one at Mound City, Illinois. Of the first-class steam gunboats, eleven are building at New York; four at Boston; two at Portland, Maine; two at Portsmouth, New Hampshire; one at Bordentown, New Jersey; one at Brooklyn; two at Philadelphia; one at Chester; and two at Baltimore, Maryland. The other vessels building in the yards are as follows: the steam frigate Franklin, at Portsmouth, New Hampshire; the steam sloops Juniata, Monongahela, and Shenandoah, at Philadelphia; the Lackawanna and Ticonderoga, at New York; and the Ossipee and Sacramento, at Portsmouth, New Hampshire. There are a large number of contracts out for new gunboats and steamers, which, when completed, will make us the most formidable navy in the world. In conclusion, we will give to the reader the following table, classifying the vessels now in our navy, and giving statistics of their tonnage and the number of guns which they carry: RECAPITULATION.