Measurement of the Direct Effect of Sun-spots on Terrestrial Climates

Reprinted from the Astronomical Society's Monthly Notices for Nov, 1876. Paperback. Very Good. Paperback. Very good in original blue wrappers which bear the raised stamp/seal of the Allegheny Observatory (1860). Some fading to wrappers, crease down the center. Interior is bright and clean, though a tiny bit of spotting to early pages. Langley was a pioneer in air travel, construction, theory, etc. 11 pp. In wraps. Science. SCI/10153.