Tarzan sat in a brown study for a long time after he finished reading the letter.

I snapped out of my brown study and looked up.

Every few minutes, I'd fall into a brown study.

Sidney collapsed out of her brown study and stared up at the face.

He came out of his brown study with a jerk.

I fell into a brown study as I walked on, and a voice at my side made me start.

He dropped into that brown study of his again.

Because I actually like and appreciate life too much now to wish myself into some brown study in order to write a stupid song.

Caught in my own brown study, I'd missed a couple of sentences.

So he'd withdraw, just go off and sit in a brown study.