THE COTTON-WADDING DRESSING AND ITS APPLICATION TO SURGICAL THERAPEUTICS ["Du Pansement Ouaté et de son application a la therapeutique chirurgicale"]. By ALPH GUÉRIN, President of the Academy of Medicine, Honorary Surgeon to the Hôtel Dieu. With figures intercalated in the text. Paris: J. B. Baillière et Fils. 1885. 12mo. Pp. 392

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III. A Consideration of the Results in Three Hundred and Twenty-seven Cases of Tracheotomy, Performed at the Boston City Hospital from 1864 to 1887. Drs. R. W. Lovett and John C. Munro:

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Course of Lectures

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Bt corn hybrid evaluation: year 2

This past growing season was good for evaluating the impact of a variety of environmental factors on corn yield, such as nitrogen losses, hail damage, green snap, etc. It was not, however, a particularly good growing season for evaluating the damaging effects of European corn borer. Insect pressures were fairly light across the state. The light insect pressures coupled with the effects of one or more environmental factors made Bt hybrid evaluations challenging in 1998 (i.e., it was difficult to identify exactly what caused yield variability). Presented herein are the results from replicated field trials conducted by Iowa State University in 16 Iowa counties

Iowa Farmer\u27s Perception of Transgenic Corn for Control of European Corn Borer and Corn Rootworm

In 1996, farmers had the option of purchasing com seed genetically engineered to produce a protein derived from Bacillus thuringiensis (B.t.), a soil bacterium that causes high mortality in European corn borer larvae. By inserting the B.t. protein gene into plants (making them transgenic), biotechnology has demonstrated many opportunities for future innovative techniques to manage crop pests. Transgenic crops may greatly improve farmers\u27 capacities to manage serious insect pests, but if farmers hold negative perceptions of this technology and/or discount pests like European com borer as being an economic problem, adoption of this pest management technique may not be widely accepted

Economic impact of soybean aphid

Since its introduction to Iowa in 2000, the soybean aphid has firmly established itself as a pest of soybean. In 2003, the largest infestations of this pest occurred in Iowa. Current research is examining accurate sampling methods, refining economic thresholds, and providing farmers with effective management options. In addition, research has been conducted to determine the economic impact of this insect pest, especially during an outbreak year

VII. Operations for Vesical Calculi:

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