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the method of Winstein and co-workers1 and gave a first order reaction rate constant of approximately 6.7 (k X 104 in hour-1). The reaction products were not isolated.

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Equine intervertebral disc degeneration is thought to be rare and of limited clinical relevance, although research is lacking. To objectively assess pathological changes of the equine intervertebral disc and their clinical relevance, description of the normal morphology and a practical, biologically credible grading scheme are needed. The objectives of this study are to describe the gross and histological appearance of the equine intervertebral discs and to propose a grading scheme for macroscopic degeneration. Spinal units from 33 warmblood horses were grossly analyzed and scored. Of the 286 intervertebral discs analyzed, 107 (37%) were assigned grade 1 and grade 2 (considered normal) and were analyzed histologically. A nucleus pulposus and an annulus fibrosus could be identified macroscopically and histologically. Histologically, the nucleus pulposus was composed of a cartilaginous matrix and the annulus fibrosus of parallel collagenous bands. A transition zone was also histologically visible. Intra- and inter-observer reliability scores were high for all observers. Higher grades were associated with greater age. Gross changes associated with equine intervertebral disc degeneration (grades 3-5)-that is, yellow discoloration, cleft formation (tearing), and changes in consistency of the nucleus pulposus-were largely similar to those in humans and dogs and were most prevalent in the caudal cervical spine. Equine intervertebral disc degeneration was not associated with osteophyte formation. Changes of the vertebral bone were most common in the thoracolumbar spine but were not correlated with higher grades of intervertebral disc degeneration. Thus, changes of the vertebral bone should be excluded from grading for equine intervertebral disc degeneration.

The article uses available survey data to depict the depth and spread of anti-Semitic attitudes across Europe. The main assumption is that European anti-Semitism, both currently and historically, is closely tied to issues and crises of national self-identification; for this reason, social identity theory is employed to study the varying configurations of anti-Semitic prejudice. In most European countries, Jews are a small and socially integrated minority. Attitudes toward them are determined less by concrete experiences of cultural differences, or conflicts over scarce resources, but rather by a perceived threat to the national self-image. This leads to an accentuation of the pertinent prejudices that blame Jews to be responsible for that threat. This perspective brings to light considerable differences between Eastern and Western Europe and the continuing influence of national traditions.