On the other three they study and hear lectures.

They are taught the beginnings of such sciences as bear upon agriculture--like chemistry, for instance.

We saw the sophomore class in sheep-shearing shear a dozen sheep.

They did it by hand, not with the machine.

The sheep was seized and flung down on his side and held there; and the students took off his coat with great celerity and adroitness.
Sometimes they clipped off a sample of the sheep, but that is customary with shearers, and they don't mind it; they don't even mind it as much as the sheep.