In the window, covered by patterns of frost, sat on a stool the girl who shared his room--Anyuta, a thin little brunette of five-and-twenty, very pale with mild grey eyes. Sitting with bent back she was busy embroidering with red thread the collar of a man's shirt. She was working against time. . . . The clock in the passage struck two drowsily, yet the little room had not been put to rights for the morning. Crumpled bed-clothes, pillows thrown about, books, clothes, a big filthy slop-pail filled with soap-suds in which cigarette ends were swimming, and the litter on the floor--all seemed as though purposely jumbled together in one confusion. . . .

"The right lung consists of three parts . . ." Klotchkov repeated. "Boundaries! Upper part on anterior wall of thorax reaches the fourth or fifth rib, on the lateral surface, the fourth rib . . . behind to the _spina scapulæ_. . ."

Klotchkov raised his eyes to the ceiling, striving to visualise what he had just read. Unable to form a clear picture of it, he began feeling his upper ribs through his waistcoat.

"These ribs are like the keys of a piano," he said. "One must familiarise oneself with them somehow, if one is not to get muddled over them. One must study them in the skeleton and the living body . . . . I say, Anyuta, let me pick them out."

Anyuta put down her sewing, took off her blouse, and straightened herself up. Klotchkov sat down facing her, frowned, and began counting her ribs.

"H'm! . . . One can't feel the first rib; it's behind the shoulder-blade . . . . This must be the second rib. . . . Yes . . . this is the third . . . this is the fourth. . . . H'm! . . . yes. . . . Why are you wriggling?"

"Your fingers are cold!"

"Come, come . . . it won't kill you. Don't twist about. That must be the third rib, then . . . this is the fourth. . . . You look such a skinny thing, and yet one can hardly feel your ribs. That's the second . . . that's the third. . . . Oh, this is muddling, and one can't see it clearly. . . . I must draw it. . . . Where's my crayon?"

Klotchkov took his crayon and drew on Anyuta's chest several parallel lines corresponding with the ribs.

"First-rate. That's all straightforward. . . . Well, now I can sound you. Stand up!"