Proceedings of the sixth annual meeting of the Association of Military Surgeons of the United States : held at Philadelphia, PA. May 12, 13 and 14, 1896.

Includes index.

General guide to the collections of the Pennsylvania museum and school of industrial art in Memorial hall, Fairmount park, Philadelphia, Pa.

Preface signed: E. A. B. [i.e. Edwin Atlee Barber]

Consequences of refuge for the functional response of Dermestes ater (Coleoptera : Dermestidae) to Musca domestica (Diptera : Muscidae)

It is well known that a predator has the potential to regulate a prey population only if the predator responds to increases in prey density and inflicts greater mortality rates. Predators may cause such density-dependent mortality depending on the nature of the functional and numerical responses. Yet, few studies have examined the relationship between the addition of refuges and the characteristic of functional response fits. We investigated whether addition of a refuge changed the type of functional response exhibited by Dermestes ater on Musca domestica, comparing the inherent ability of D. ater to kill houseflies in the absence and in the presence of refuge. An additional laboratory experiment was also carried out to assess handling and searching times exhibited by D. ater. Logistic regression analyses revealed a type III functional response for predator-prey interaction without refuge, and results were described by the random predator equation. The mean number of prey killed did not differ between experimental habitats, indicating that the addition of refuge did not inhibit predation. However, predators that interacted with prey without refuge spent less time searching for prey at higher densities, increasing predatory interaction. We concluded that this interaction may be weak, because data from experiments with refuge fitted poorly to models. However, the high variability and the nonsignificance of the data from the experiment with refuge show the importance of refuge for promoting spatial heterogeneity, which may prevent prey extinction.

Abstract proceedings : Second Forum on Innovative Hazardous Waste Treatment Technologies, Domestic and International : Philadelphia, PA, May 15-17, 1990.

Mode of access: Internet.

Papers presented at the Census Tract Conference on September 10, 1965 at Philadelphia, Pa.

Mode of access: Internet.

Harrison's Analytical digest of all the reported cases determined in the House of lords, the several courts of common law, in banc and nisi prius, and the Court of bankruptcy: from Michaelmas term, 1856, to Easter term 1843; including also the crown cases reserved, and a full selection of equity decisions: with the manuscript cases cited in the best modern treaties not elsewhere reported: to which is added a Supplement continuing work to the year 1846.

Mode of access: Internet.

Reports of adjudged cases in the Court of Common Pleas. During the time Lord Chief Justice Willes presided in that court [1737-1758]; together with some few cases of the same period determined in the House of Lords, Court of Chancery, and Exchequer Chamber.

Includes index.

Trial of John Jasper for the murder of Edwin Drood; in aid of Samaritan, Children's Homeopathic, St. Agnes and Mt. Sinai hospitals, April 29, 1914, Academy of Music, Philadelphia, U.S.A.

"Introduction by John M. Patterson": p. 27-39.

The search for work in Philadelphia, 1932-36; an analysis of records of the Philadelphia state employment office,

Mode of access: Internet.

Report of the Special Committee of the House of Representative Appointed to Investigate the Authorship of Certain Papers Sent to Banks ... [microform] : with an appendix containing proceedings in House of Representatives on said bill.

Includes index.

Commission on Organization of the Executive Branch of the Government : water resources and power report : hearings before a Special Subcommittee of the Committee on Government Operations, House of Representatives, Eighty-fourth Congress, first session, November 21 and 22, 1955.

Cover title.

The crisis: a solemn appeal to the President, the Senate and House of representatives, and the citizens of the United States, on the destructive tendency of the present policy of this country, on its agriculture, manufactures, commerce, and finances. With a comparison between the extraordinary prosperity of Great Britain, and the general depression in the United States.

Sabin

Pastoral letters from the House of Bishops to the clergy and members of the Protestant Episcopal Church in the United States of America.

Includes the letters issued from 1808 to 1844.

The house of Aspen : a tragedy /

First published: London, 1829.