(1) Opere matematiche di Francesco Brioschi (2) Opere matematiche di Eugenio Beltrami
(1) Osler and other Papers (2) The Genius of Louis Pasteur (3) Ronald Ross: Discoverer and Creator
(1) Pagan Survivals in Mohammedan Civilisation (2) High Gods in North America: Upton Lectures in Religion, Manchester College, Oxford, 1932 (3) East and West in Religion (4) Christian Myth and Ritual: a Historical Study (5) A Short History of Religions
(1) Pflansengeographische Wandlungen der deutschen Landschaft (2) Die Pflanzenwelt Dalmatiens (3) Einführung in die Tropenwelt
(1) Photography : its Principles and Practice (2) Wissenschaftliche Photographie : eine Einführung in Theorie und Praxis (3) The Technique of Colour Photography (4) Photographic Amusements: including Tricks and Unusual or Novel Effects obtainable with the
(1) Proceedings of the Aristotelian Society (2) Encyclopædia of the Philosophical Sciences (3) Evolution by Cooperation (4) The Science of the Sciences (5) Probleme der Entwicklung des Geistes (6) Naturphilosophische Plaudereien
(1) Romance of the Moon (2) The Story of the Moon: a Description of the Scenery of the Lunar World as it would appear to a Visitor spending a Month on the Moon
(1) Science and Creation: the Christian Interpretation (2) Contributions of Science to Religion (3) New Light on Genesis: or Creation during Descent in the Scriptures
(1) Service des Antiquités de l'Egypte Catalogue Général des Antiquités Egyptiennes du Musée du Caire (2) British School of Archaeology in Egypt
(1) Sir Isaac Newton: a Brief Account of his Life and Work (2) La vie ransonnable de Descartes
(1) Sound An Elementary Text-book for Schools and Colleges (2) Die Brownsche Bewegung und einige verowandte Erscheinungen (3) Photo-Electricity The Liberation of Electrons by Light (4) Course de Physique Générale Leçons professées à la Faculté des Sciences
(1) Star-Lore for Teachers: Suggestions for the Teaching of Astronomy by direct Observation, Experiment, and Deduction (2) The Star Pocket-book; or, How to Find Your Way at Night by the Stars A Simple Manual for the Use of Soldiers, Travellers, and other L
(1) Stars and Telescopes (2) Through the Telescope: (3) Highlights of Astronomy
(1) Steering by the Stars for Night-flying, Night-marching, and Night Boat-work between Latitude 40° N and 60° N (2) The Stars as Guides for Night-marching in North Latitude 50°
(1) Stellarastronomie (2) An Outline of Stellar Astronomy
(1) Stories of Exploration and Discovery (2) The North-West and North-East Passages, 1576 1611
(1) Symmetry of Double Radio Sources; (2) Continuum Polarization in White Dwarfs; (3) Circumstellar Emission in Recurrent Novae.
(1) Tabelle der Hauptlinien der Linienspektra aller Elemente nach Wellenlänge geordnet (2) Atlas de spectres d'arc: tableaux d'analyse pour les recherches spectrochimiques
(1) The Adolfo Stahl Lectures in Astronomy Delivered in San Francisco, California, in 1916 17 and 1917 18, under the Auspices of the Astronomical Society of the Pacific (2) Planetary Rotation Periods and Group Ratios
(1) The America of To-day Being Lectures delivered at the Local Lectures Summer Meeting of the University of Cambridge, 1918 (2) The Voyage of a Vice-Chancellor