Meteorologic observations at Cambridge in New England, 1744-1747

Notebook containing handwritten meteorologic observations and calculations made by John Winthrop for the years 1744 (18 pages), 1745 (23 pages), 1746 (15 pages), and 1747 (20 pages). The verso of the last page in the volume contains the note "presented June 16 1748.")

Heinrich J.v. Collin's sämmtliche werke ...

Editor's dedication signed: Matthäus v. Collin.

Kaiser Leopold II. : Geschichte Oestreichs unter seiner Regierung, 1790-1792 /

Title of this v. on series t.p.: Die Regierung des Kaisers Leopold II., 1790-1792.

History of the house of Austria, from the foundation of the monarchy by Rhodolph of Hapsburgh, to the death of Leopold, the Second: 1218 to 1792.

Mode of access: Internet.

Jacob Jonas Björnståhl ... Briefe auf seinen ausländischen reisen an den königlichen bibliothekar C. C. Gjörwell in Stockholm.

An account of a bibliographical tour undertaken with special reference to the study of Oriental literature and philology; interrupted by the death of the author at Salonica in 1779.

Gedichte des Königsberger Dichterkreises aus Heinrich Alberts Arien und Musicalischer Kürbshütte (1638-1650)

Poems by Simon Dach, Heinrich Albert, Robert Robertin, Andreas Adersbach, Martin Opitz, Johann Peter Titz, Christoph Kaldenbach, Christoph Wilkow, Georg Mylius, Michael Behm, Johann Sand, Johann Gamper, Jonas Daniel Koschwitz, Albert Linemann, Valentin Thilo.

Briefe an und von Johann Heinrich Merck : eine selbständige Folge der im Jahr 1835 erschienenen Briefe an J.H. Merck /

Includes indexes.

Classical Biological Control for the Protection of Natural Ecosystems.

Of the 70 cases of classical biological control for the protection of nature found in our review, there were fewer projects against insect targets (21) than against invasive plants (49), in part, because many insect biological control projects were carried out against agricultural pests, while nearly all projects against plants targeted invasive plants in natural ecosystems. Of 21 insect projects, 81% (17) provided benefits to protection of biodiversity, while 48% (10) protected products harvested from natural systems, and 5% (1) preserved ecosystem services, with many projects contributing to more than one goal. In contrast, of the 49 projects against invasive plants, 98% (48) provided benefits to protection of biodiversity, while 47% (23) protected products, and 25% (12) preserved ecosystem services, again with many projects contributing to several goals. We classified projects into complete control (pest generally no longer important), partial control (control in some areas but not others), and "in progress," for projects in development for which outcomes do not yet exist. For insects, of the 21 projects discussed, 59% (13) achieved complete control of the target pest, 18% (4) provided partial control, and 41% (9) are still in progress. By comparison, of the 49 invasive plant projects considered, 27% (13) achieved complete control, while 33% (16) provided partial control, and 47% (24) are still in progress. For both categories of pests, some projects' success ratings were scored twice when results varied by region. We found approximately twice as many projects directed against invasive plants than insects and that protection of biodiversity was the most frequent benefit of both insect and plant projects. Ecosystem service protection was provided in the fewest cases by either insect or plant biological control agents, but was more likely to be provided by projects directed against invasive plants, likely because of the strong effects plants exert on landscapes. Rates of complete success appeared to be higher for insect than plant targets (59% vs 27%), perhaps because most often herbivores gradually weaken, rather than outright kill, their hosts, which is not the case for natural enemies directed against pest insects. For both insect and plant biological control, nearly half of all projects reviewed were listed as currently in progress, suggesting that the use of biological control for the protection of wildlands is currently very active.

House of Karl Gottschalk on Richard-Wagner-Strasse; Hannover, Germany.

Digital Image

House of Karl Gottschalk on Richard-Wagner-Strasse; Hannover, Germany.

Digital Image

Therese Mayerhof nee Molling with Joel, Ilse, Adolf, Grete, and Leopold Meyerhof on rooftop of store and residence Meyerhof am Platze; Hildesheim, Germany.

From left to right, standing: Ilse, Adolf, Grete and Lepold Meyerhof; from left to right, sitting: Joel Meyerhof and Therese Mayerhof nee Molling

Portrait of Leopold Meyerhof in his World War I officer's uniform Military; World War I; Portraits

Digital Image

Therese Molling with Joel, Ilse, Adolf, Grete, and Leopold Meyerhof on rooftop of store and residence Meyerhof am Platze; Hildesheim, Germany.

From left to right, standing: Ilse, Adolf, Grete and Lepold Meyerhof; from left to right, sitting: Joel Meyerhof and Therese Molling

Portrait of Arno Nadel holding a copy of Wagner's "Tannhauser"; Hamburg Portraits; Men

Handwritten on verso: "Hamburg den 27 11.17 Sontag"