Diagrams, experimental equipment and observations by W H [William Henry] Dines Three pages of diagrams, labelled sheets 1-3. Sheet 1 shows the 'large whirling machine' built for Dines' investigations into wind pressure upon an inclined surface. Sheet 2 shows 12 diagrams indicating wind direction via stream lines under different conditions. Sheet 3 shows six graphs of experimental observations. Subject: Meteorology Prints of these diagrams were published in volume 48 of the Proceedings of the Royal Society alongside the paper 'On wind pressure upon an inclined surface'. 1890