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Show The HaEsler Expedition. The Hassler scientific expedition wns mndo In the United Stntes const survey stenmer Hnsslcr, between Dec. 4, 1871, nnd August, 1872, P. C. Johnson commanding. Tho scientific Investigations Investiga-tions were cnrrled on under the chnrRc of Prof T.onls Annsslz. Stnrtlnc from Philadelphia, tho route embraced the West Indies, Brazilian coast, Strait of Magellan, nnd the Pnclflc const nnd Islnnds to Snn Frnnclsco. Deep sea drcdglngs were made at nil favorable points. |