Lacto Bacto

I am the very model of a modern Major-General,

I've information vegetable, animal, and mineral,

I know the kings of England, and I quote the fights historical,

From Marathon to Waterloo, in order categorical;

I'm very well acquainted too with matters mathematical,

I understand equations, both the simple and quadratical,

About binomial theorem I'm teeming with a lot o' news---

With many cheerful facts about the square of the hypotenuse.