CONTEXTS. 
Page. 
Introduction 7 
Influence of hypnotics 8 
Urethane 9 
Chloral 9 
Paraldehyde 11 
Magnesium sulphate 12 
Specificity 20 
Effect of heat on the toxicity of proteins 22 
Effect of heat upon the sensitizing property of proteins 30 
Effect of heat upon sensitive guinea-pig serum 37 
Sensitizing action of dried horse serum 38 
Sensitizing action of euglobulins 39 
Immunity 40 
Antibodies. 42 
Time 47 
Summary and conclusions 48 
( 5 ) 
