Ma'aseh Toviyyah

Ma'aseh Toviyyah or Ma'aseh Tobiyyah ("Work of Tobias") was an encyclopedic scientific reference book written by Tobias Cohn.

The work is divided into eight parts: (1) theology; (2) astronomy; (3) medicine; (4) hygiene; (5) Syphilitic maladies; (6) botany; (7) cosmography; and (8) an essay on the four elements.

The most important is the third part, which contains an illustration showing a human body and a house side by side and comparing the members of the former to the parts of the latter (see illustration).

In part 2 are found an astrolabe and illustrations of astronomical and mathematical instruments.

Inserted between parts 6 and 7 is Turkish-Latin-Spanish dictionary; and prefixed to the work is a poem by Solomon Conegliano.