CONTENTS. 



PAGE. 



Method 193 



Types of muscle 194 



Smooth muscle from the amnion 194 



Growth from the amnion in tissue-cultures 194 



Contraction of the smooth-muscle cells 197 



Comparison of the growth in tissue-cultures with cells of the normal 



amnion 199 



Fixed preparations 200 



Heart muscle 201 



Growth from the heart muscle in tissue-cultures 202 



Contraction of the heart-muscle cell 202 



Comparison with cells of the normal heart 203 



Skeletal muscle 203 



Growth from the skeletal muscle in tissue-cultures 204 



Contract ion of the skeletal-muscle cell \ . . . 205 



Other cross-striated muscular tissue 205 



Discussion 207 



Conclusion 209 



Bibliography 210 



Description of plates 212 



192 



