Il6 PHYSIOLOGICAL TRIGGERS 



9. McEnroe, W. Insect fibrillar indirect flight muscle. Master's Thesis. Storrs, Conn.: 



Univ. of Connecticut, 1954. 

 10. PiPA, R. L. A comparative histological study of the indirect flight muscles of various 



insect orders. Master's thesis. Storrs, Conn.: Univ. of Connecticut, 1955. 

 17. Pringle, J. W. S. The excitation and contraction of the flight muscles of insects. J. 



Physiol. 108: 226-232, 1949. 



12. Pringle, J. W. S. The mechanism of the myogenic rhythm of certain insect striated 

 muscles. /. Physiol. 124: 269-291, 1954- 



13. SoTAVALTA, O. Recordings of high wing-stroke and thoracic vibration frequency in some 

 midges. Biol. Bull. 104: 439-444, 1953. 



