Tantalum radiography of the respiratory tract in dogs.
ALTHOUGH radiography of the respiratory tract was suggested by Chevalier Jackson in 1918 1 the full potential of this diagnostic aid has never been realized. The major drawbacks of the three radiopaque materials thus far employed in radiography of the airway 1-4 have been that:
XXXI. Further Data on the Displacement Method in Sinuses
The initial report of the method of displacement irrigation of the nasal sinuses, published in April, 1926, was a bare outline of the procedure and comprised a very limited number of case reports.' Since that time more cases have been studied and time has permitted a more complete observation of the results obtained. It is the purpose of this paper to consider these cases and the problems they involve, to outline the method in detail and to discuss the difficulties likely to be encountered. Under proper control and with certain precautions, our percentage of successes in introducing the fluids wherever desired has been high. Failures in injecting sinuses due to lapses in the method have practically disappeared. Failure of fluids to penetrate, due to pathologic changes about the ostia occur, and are considered of diagnostic importance.
Athenian Democracy at War
Classical Athens perfected direct democracy. The plays of this ancient Greek state are still staged today. These achievements are rightly revered. Less well known is the other side of this success story. Democratic Athens completely transformed warfare and became a superpower. The Athenian armed forces were unmatched in size and professionalism. This book explores the major reasons behind this military success. It shows how democracy helped the Athenians to be better soldiers. For the first time David M. Pritchard studies, together, all four branches of the armed forces. He focuses on the background of those who fought Athens' wars and on what they thought about doing so. His book reveals the common practices that Athens used right across the armed forces and shows how Athens' pro-war culture had a big impact on civilian life. The book puts the study of Athenian democracy at war on an entirely new footing.