Where scholars recorded the living world. A precise atlas of zoology. The International Catalogue of Scientific Literature Fourth Annual Issue (N Zoology) Part I gathers bibliographic records from early 20th century science into a comprehensive scientific literature catalogue that serves as both a zoology reference guide and an academic bibliography collection. Meticulously compiled, its entries organise references to periodicals and monographs, offering a systematic scientific research index that helps map the pathways of discovery. The volume charts shifts in animal species classification, notes cross-disciplinary dialogue on natural history topics, and preserves the bibliographic traces that underpin modern taxonomic practice. For students and teachers it functions as a biology textbook companion that points back to primary sources; for researchers the catalogue acts as a researcher reference tool that speeds archival work and clarifies citation histories. Read casually, the work offers textured access to the concerns and language of early naturalists; read closely, it remains a key bridge to historical zoological works and to the scientific journal anthology of its age. Republished by Alpha Editions in a careful modern edition, this volume preserves the spirit of the original while making it effortless to enjoy today - a heritage title prepared for readers and collectors alike. As both a university library resource and a collector's reference, it meets the needs of librarians, historians, curators and independent scholars: follow the chains of citation, reconstruct the pedigree of species names, or simply savour the record of scientific inquiry in an era of vigorous classification. Casual readers intrigued by the development of biological thought will find clear pathways into archival material; classic-literature collectors will prize its documentary resonance among historical zoological works. Its structured listings help digital scholars and bibliographers reconnect threads of thought across continents and languages. Librarians and academics will welcome the predictable organisation; curious readers enjoy the surprising range of entries and the immediacy of period scholarship. Practical, scholarly and reverent in equal measure, this issue stands as an essential pointer to the foundations of modern zoology.