Mitologia Słowiańska w Zarysie ("An Outline of Slavic Mythology"), accessible through Polona, the digital library of the National Library of Poland, provides a comprehensive overview of the pre-Christian belief systems of the Slavic peoples. This resource represents an important scholarly effort to reconstruct and understand a mythological tradition that, unlike Greek or Norse mythology, lacks extensive written documentation from its active period.

The text examines key deities in the Slavic pantheon, such as Perun, the thunderer and supreme god of the pantheon, and Veles, the god of the underworld, cattle, and wealth. These gods formed a cosmic dichotomy, with Perun ruling the sky and Veles governing the underworld, their eternal conflict symbolising the tension between order and chaos in the Slavic cosmological view.

Beyond major deities, the work explores the rich world of spirits that populated the Slavic mythological landscape. These include the domovoi (house spirits) that protected homes and families, and the rusalki (water spirits), often represented as beautiful maidens who could bring both blessing and misfortune to those who encountered them.

The text details how these mythological figures were central to the cultural and spiritual practices of pre-Christian Slavic societies, informing seasonal rituals, agricultural practices, and community cohesion. Despite the relative scarcity of primary sources, the work synthesises archaeological findings, linguistic evidence, and later folkloric traditions to construct a coherent picture of Slavic mythological systems.

This scholarly resource demonstrates how mythological research can illuminate historical worldviews and social structures, even when working with fragmentary evidence and traditions disrupted by religious conversion and cultural change.