Our summer migrants. An account of the migratory birds which pass the summer in the British islands Q Science
New and conclusive physical demonstrations, both of the fact and period of the Mosaic deluge, and of its having been the only event of the kind that has ever occurred upon the earth Q Science
Cordoba photographs. Photographic observations of star-clusters from impressions made at the Argentine national observatory, measured and computed with aid from Argentine Government Q Science
