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* HOP-LOUSE. 205 HOPPE-SEYLER. in the neighborhood of the hop-yards. These eggs hatch in the spring at the time when the huds are about to burst, and three generations of wingless, jjarthenogenetic females are born upon the plum-trees. Then a fourth generation, con- sliip, Gloueester County, New Jersey, December 3, 1771. At sixteen years of age he was apprenticed to an uncle in Philadelphia to learn the trade of a tailor. In early manhood he became an active and leading member of the abolition society founded WINGED RETURN MIGRANT, OR PUPIFER. sisting of winged agamic females, makes its ap- pearance. These females fly to the hop fields and establish themselves there, giving birth to living BHRUNKEX FEMALE IN ACT OP DEPOSITING WIN- TER EGGS. WINGED MALE, AT END OF SUMMER. young which, agamic and wingless, give birth to individuals like themselves. The tenth or elev- enth generation is winged, flies back to the plum, and gives birth to true sc.ual females which are wingless, but which mate with winged males which fly in from the fields. The winter egg is then laid once more upon the plum twigs. (See Alteknation of Generations, and Aphid.) The liest remedy for this injurious creature is to cut down all but one or two of the plum-trees near the hop-yard, and then to destroy in May all of the lice on the one or two remaining trees by spraying with a dilute kerosene-soap emulsion or a fish-oil soap wash. HOP 0' MY THtTMB. The diminutive hero of a popular fairy tale, taken from Perrault's Comics de.i F<^es, the popular sources of which are the classic stories of Ulysees and Polyphe- mus and (if Theseus and Ariadne. HOP'PER, Isaac Tatem (1771-18,52). An American pliilanthropist, prominent in the anti- slavery movement. He was born in Deptford town- NORMAL PARTnENOOESETlC FEMALE; SIXTH GENERATION. by Franklin, Rush, and others, and was also an overseer of a school for colored children, secretary of a society for the emplojTiient of the poor, inspec- tor of a prison, guardian of abused apprentices, and a friend of the insane. He b e 1 o n ge d to the Society of Friends, and in the division which occurred in 1827-28 he acted with those who were called 'Hicks- ites,' influenced much, no doubt, by his great re- g a r d and ad- miration for Elias Hicks as an earnest anti- slavery preach- 1829 he came to New York to take charge book-store opened by the Hicksite Friends. His activity in opposition to slavery exposed him to much abuse and even imperiled" his life ; but this did not in the least abate his zeal. In 1841 he gave up the charge of the book-store and was appointed treasurer and oflice agent of the Ameri- can Anti-Slavery Society, and so continued until 1845, when he became the first agent of the New York Prison Association. Declining years and ill health compelled his resignation in February, 18.52. He died in New York, Mav 7, 18.52. Con- sult his life by Child (New York, 1881). HOPPE-SEYXER, h6p'pc-zl'ler, Felix ( 1825- 95). A German physiologist and chemist, born at Freyhurg-onthe-t'nstrut;. and educated at Halle. Leipzig, Berlin, Prague, and Vienna. After five years as assistant to Virchow and director of the chemical laboratory of the Berlin Pathological Institute, he became professor of applied chemistry at Tiibingen (18fll),and (1872) of physiological chemistry at Strassburg. He wrote : Ilnndbuch der phi/xioloffi.tch- und patholo(jisch-chrmi«rltcn Ana- hl.ie(Gih ed, 1893) ; Mcdiziiiisch-chcmische Unter- suchiingen (18Gfi-70) : and Phi/siolofiisclic Chemie (1877-81). Consult liaumann and Kossel, Zur