His archaeological work included the investigation of lake dwellings and other prehistoric structures; he went with Schliemann to Troy in 1879, fruits of the expedition being two books, ZurLandeskunde der Troas (1880) and Alt-trojanische Gr p ber and Schad (1882); in 1881 he visited the Caucasus, and on his return published Das Graberfeld von Koban im Lande der Osseten; and in 1888 he accompanied Schliemann to Egypt, Nubia and the Peloponnese.
Turning to the mainland of Greece we see that the astonishing remains of a highly developed prehistoric civilization, which Schliemann first brought to light in 1876 at Mycenae, Minoan and which from those discoveries received the general influence on main= name of " Mycenaean," in the main represent a trans land of marine offshoot from the Minoan stock.
As soon as Schliemann came on the Mycenae graves three years later, light poured from all sides on the prehistoric period of Greece.
Schliemann got to work again at Hissarlik in 1878, and greatly increased our knowledge of the lower strata, but did not recognize the Aegean remains in his "Lydian" city of the sixth stratum, which were not to be fully revealed till Dr W.
But by laying bare in 1884 the upper stratum of remains on the rock of Tiryns (q.v.), Schliemann made a contribution to our knowledge of prehistoric domestic life which was amplified two years later by Chr.