null, Most Recent Additions
- Total Eclipse of The Sun Étienne Léopold Trouvelot, 1882
- The Planet Saturn Étienne Léopold Trouvelot, 1882
- The November Meteors Étienne Léopold Trouvelot, 1882
- The Zodiacal Light Étienne Léopold Trouvelot, 1882
- The Great Comet of 1881 Étienne Léopold Trouvelot, 1882
- Star Cluster in Hercules Étienne Léopold Trouvelot, 1882
- Group of Sunspots and Veiled Spots Étienne Léopold Trouvelot, 1882
- Aurora Borealis Étienne Léopold Trouvelot, 1882
- The Planet Mars Étienne Léopold Trouvelot, 1882
- Mare Humorum Étienne Léopold Trouvelot, 1882
- Solar Protuberances Étienne Léopold Trouvelot, 1882
- Plate 99, Trochilidae Ernst Haeckel, 1904
- Plate 98, Discomedusae Ernst Haeckel, 1904
- Plate 96, Chaetopoda Ernst Haeckel, 1904
- Plate 93, Mycetozoa Ernst Haeckel, 1904
- Plate 92, Filicinae Ernst Haeckel, 1904
- Plate 90, Cystoidea Ernst Haeckel, 1904
- Plate 9, Hexacoralla Ernst Haeckel, 1904
- Plate 89, Chelonia Ernst Haeckel, 1904
- Plate 88, Discomedusae Ernst Haeckel, 1904
- Plate 87, Teleostei Ernst Haeckel, 1904
- Plate 85, Ascidiae Ernst Haeckel, 1904
- Plate 84, Diatomea Ernst Haeckel, 1904
- Plate 82, Hepaticae Ernst Haeckel, 1904