The image is a black and white photograph of a glass globe that has been cracked due to internal pressure. The globe is spherical and appears to be made of clear glass. It is covered in a network of cracks that radiate from a central point. The cracks are of varying lengths and widths, and some of them are connected to form larger fissures. The globe is connected to a vertical tube at the bottom, which is likely the source of the internal pressure. The background is completely black, which emphasizes the shape and texture of the globe and its cracks. The image is labeled 'Plate XIX' at the top and 'J. Nasmith' and 'Heliotype' at the bottom. Below the image, there is a caption that reads 'CLASS GLOBE CRACKED BY INTERNAL PRESSURE.'