In looking down upon a large city, the unity visible even in the diversity of human affairs manifests itself in a manner truly wonderful. The air is literally filled with a vast net-work of wire, crossing and re-crossing in every conceivable direction, and over these, backward and forward, the thoughts of men are made to vibrate with the speed of lightning, in the elaboration and consummation of thousands of business schemes, and the air, as well as the buildings and streets, is full of human activity and enterprise. The lawyer, sitting comfortably at his desk in his office, talks with his banker, physician, grocer, a hundred clients, and his family, all seated like him himself at home, or at their various places of business. Thus is the telephone made the instrument of human co-operation and concert of action. It is now less than thirty years since dairymen stumbled into the practice of co-operation in the business of making-cheese. Previous to that time cheese-making in this country was, to say the least, a crude affair. Every farmer ran his own factory, according to his own peculiar notion, and disposed of his products as he could "light on" chaps. In that day, cheese-making was guess work and hap-hazard. To-day it is a science. Then there were as many rules and methods as there were men. To-day the laws which nature has enacted, to govern the process of converting milk into cheese, are codified, and cheese-making has become a profession. In that day the accumulated results of the cheese industry of a neighborhood or township was a sight to behold--all manner of circular blocks, of concentrated error, large and small, thick and thin, when heaped together presented a spectacle that would now bring a smile upon the countenance of the most sober and dignified cheese-maker in the State. The condition of the market at that time was quite as crude and irregular as the system, or rather the want of system, in manufacturing. There was no cable, no regular reports from the great business centers of the land, no regularly organized boards of trade, railroads not as numerous, less daily papers were in circulation, and many other circumstances which left the seller comparatively at the mercy of the buyer, and the purchase and sale of a dairy was conducted upon principles similar to those usually practiced in a horse trade.