THE NATURE AND RADIOGRAPHIC PATTERNS OF PERIOSTEAL RESPONSE IN THE BOVINE

Seventy-five bovine radiographic examinations with definite periosteal response were analyzed for quality and pattern of new bone formation. Three patterns were recognized — amorphous, lamellar, and spiculated; they appeared singly or in various combinations. The lamellar and amorphous types seemed to be generally bone-related: with lamellar predominantly in the metacarpal and metatarsal bones and amorphous in the phalanges. The spiculated pattern in the bovine does not seem to be related to neoplastic processes. Bovine periosteum responded rapidly and with high magnitude.     

The Structure of Agricultural Unemployment in the United States

This paper examines whether employment in agriculture is more sensitive to fluctuations in the level of economic activity than is employment in the economy as a whole. The analytical framework of the investigation rests on two functional relationships between unemployment and economic activity introduced by Thurow. The results indicate that agricultural unemployment is impacted by variations in economic activity to the same extent as is total unemployment. Finally, when subjected to a stability test, the underlying structural relationships are deemed to be stable over the sample period (1948-1988).