They don't kill them where they are raised, for then they would have to haul away the beef in wagons or sleighs, but make the animals walk to market themselves, and kill them there.

But the farmers don't generally take their own cattle to market.

Men go about the country, and call upon the farmers, and buy their cattle, and thus collect great droves.

These men are called drovers.

In traveling in this part of the country, late in the fall, you would see great droves of cattle and sheep, passing along the road, all going to Boston, or rather Brighton." "Where is Brighton ?" asked Marco.
"It is a town very near Boston, where the great cattle market is held.
The Boston dealers come out to Brighton, and buy the cattle, and have them slaughtered, and the beef packed and sent away all over the world.