Puzzle 19

An artwork made mostly from shades of brown.

Unaccompanied, monophonic liturgical chanting.

Gogol's account of the ownership of deceased serfs.

US grape once thought related to Italy’s Primitivo.

It's worn by people to block out light in bed.

Mistress of Harlequin in commedia dell'arte.

Greatest vertical drop on Earth.

Triangular looped symbol representing the Trinity.

Lacking pigmentation, but not fully albino.

Sleep-prompting chemical; an anagram of none aside.

Study of the characteristics of different peoples.