One has to praise highly the Bolivian government and especially the Mesa couple (Teresa Gisbert is the wife of José de Mesa) for one of the best enterprises in the field of Latin American history. With these excellent scholarly pamphlets the Mesas have opened a vast new field. While they have already achieved a reputation for their solid research in colonial architecture and painting, their newest ventures show no lack in erudition and competency. The studies dealing with colonial science and with contemporary paintings are highly recommended. The same is true for the study of colonial theatre. The pamphlet by the Director of the Colonial Museum of Sucre, Giménez-Carranza, is also of high quality.