Descriptive notation

I've just bought an old book on chess (The Art of Attack in Chess) and it uses descriptive notation. I've gone through the Wikipedia article to get the gist of it, but the book keeps using a lowercase t in the notation, could somebody explain what this means and translate this into algebraic notation? 

1. P-Q4 B-Kt2?

2. PxP KtP?

3. Q-Q4

B-Kt2 stumps me. Is it b7? 

Thanks.

2. ... KtxP?

Sorry for the error there.

In some of the older books with Descriptive notation the knight is represented by "Kt" rather than "N."

Kt = N, thanks that clears up everything. I thought it was saying King and then something else.  

There are so many wonderful books out there that still use descriptive notation. You would be doing yourself a favor by learning it! And it's not that hard.

The Art of Attack in Chess is also available in algebraic.