There are also flocks of coarse-wooled sheep which produce heavy fleeces, and when fattened for the butcher make excellent mutton. In 1840 the wool clip of this State was about 150,000 lbs., in 1850 something over 2,000,000 lbs., and 1859 it amounted to nearly 4,000,000 lbs. It will be seen by these figures that it has nearly doubled during the last nine years. There are but few woolen manufactories in Michigan, and the most of the wool clip of this State is purchased by Eastern manufacturers. A considerable portion of it goes to Boston and other parts of Massachusetts. We want a large woolen factory in Detroit, where everything that is necessary for its operation can be easily procured. We want more manufactories of every kind in Michigan. Our city is largely interested in the shipping business, and its trade gives employment to a larger number of side-wheel steamboat lines than any other three cities on the entire chain of lakes. During the last season, the following regular lines of steamers were in successful operation: Detroit and Cleveland. Detroit and Toledo. Detroit and Sandusky. Detroit and Saginaw. Detroit and New Baltimore. Detroit and Maiden. Detroit, G. Bay and Buffalo. Detroit and Lake Superior. Detroit and Port Huron. Detroit and Chatham. Detroit and Wallaceburg. Detroit and Gibraltar. Two of the above routes sustain opposition lines, and to the list might be added the line of lake steamers to Buffalo, and the line to Goderich, which though not run last year, will probably be in successful operation the coming season, making in all sixteen lines. It is significant that the late financial revulsion, which fell with such crushing weight upon the shipping interest all over the country did not occasion the withdrawal of any of our steamboat lines, save one. As a still more striking fact, we may state that until last season none of the cities located in the vast region between the foot of Lake Michigan and the foot of Lake Erie, has for many years past supported a single line of steamers that did not make Detroit a terminus. Last year a line was put in successful operation between Buffalo and Cleveland, and another between the latter place and Toledo, but it ought to be added that both of these were established by Detroit enterprise. In addition to the line above enumerated, we have daily lines of propellers to Ogdensburg, Buffalo, Dunkirk and to the Upper Lakes, which do an immense freighting business. We are indebted to Captain J. H. Hall, the public-spirited proprietor of the Detroit shipping-office for following statement of the number of vessels that passed Detroit in 1859: _Number of Vessels passing Detroit, 1859._ No. Times. Steamers passed up, 194 Propellers, " 492 Barks, " 273 Brigs, " 295 Schooners, " 1,811 ----- Total number up, 3,065