The splendid collection of modern German pictures owned by Count von Schack, at Munich, includes "Tartini's Dream," which was painted by James Marshall. He was born at Amsterdam in 1838, but studied in Antwerp and Paris, and at Weimar under Friedrich Preller. Most of Marshall's life has been spent in Germany. BACH. Bach's position as one of a numerous family of musicians is unique, for it cannot be said of any other composer that his forefathers, his contemporary relations, and his descendants were all musicians, and not only musicians, but holders of important offices as such. Johann Sebastian Bach, the greatest of all that bore that name, considered the founder of his family to be Veit Bach, a Thuringian musician who settled in Pressburg in Hungary as a baker and miller. Later, because of religious persecution, he returned to his native country, where he lived at the village of Wechmar near Gotha, dying in 1619. Of his numerous musical descendants, Johann (1604-1673) became organist at Schweinfurt, and afterward director of the town musicians at Erfurt. Here, though the town suffered much from the effects of war, he founded a family which quickly increased and soon filled all the town musicians' places, so that for about a hundred and fifty years, and even after no more of the family lived there, the town musicians were known as "The Bachs." [Illustration: Bach's Preludes. From painting by E. J. C. Hamman.] Heinrich Bach (1615-1692) was organist of the Franciscan Church at Arnstadt for fifty years, composed much, and had six children, three of whom were, in their day, noted musicians. Of the twin brothers, Johann Ambrosius and Johann Christoph, born in 1645, the first was town organist of Eisenach, and the second court musician at Arnstadt. These brothers were remarkably alike, not only in looks, but in character and temperament. They both played the violin in exactly the same way, they spoke alike, and it is said that their own wives could scarcely tell them apart. They suffered from the same illnesses, and died within a few months of one another. Johann Christoph once figured in an action for breach of promise of marriage brought before the Consistory at Arnstadt by Anna Cunigunda Wiener, with whom he had once "kept company." The court decided that Bach must marry her, but, with the independence of his family, he refused to do so, and he kept his word. Another Johann Christoph, uncle of the great Sebastian, was organist at Eisenach for sixty years, and is, together with his brother Michael, distinguished as a composer. Maria Barbara, the youngest daughter of Michael, became Sebastian Bach's first wife. One Johann Jacob Bach was an oboe-player in the Swedish guard, and followed Charles XII. to his defeat at Pultowa, later becoming court-musician at Stockholm.