Carbohydrates of the Root of the Cat Tail. 45 



animal than acetanilid would be if injected alone, for in case of the 

 more slowly acting combination the animal has a longer period of 

 time for the excretion of the poison. The author does not at all 

 presume to offer these experiments as a complete explanation of 

 the above-described synergism, but it is thought that the present 

 findings are at least a little tangible contribution towards the 

 explanation of the peculiar phenomenon. 



Experiment, October 28, 1919. 



Stimulation of Gastrocnemii Muscles of Rana Clamata. 





Left Side. 



Right Side. 



Time. 



Stimulation of 



Stimulation of 



Stimulation of 



Stimulation of 





Muscle. Position 



Nerve. Position 



Muscle. Position 



Nerve. Position 





of Secondary Coil. 



of Secondary Coil. 



of Secondary Coil. 



of Secondary Coil. 





Immersed in physiological NaClSol. 



Immersed in physiological NaCl Sol. 



2:45 p.m. 



23.0 cm. 



37.0 cm. 



24.5 cm. 



47.0 cm. 



2:50 " 



23.0 " 



37-0 " 



24-5 " 



43-0 " 



3:05 " 



23.0 " 



39-0 " 



24-5 " 



44.0 " 



3:07 " 



Immersed in physiological NaCl 



Immersed in physiological NaCl 





Sol. containing acetanilid 1 1500 



Sol. containing acetanilid 1 15000 





and sodium bicarbonate 1 : 1,000 







3:21 " 



20.1 cm. 



27.0 cm. 



22.5 cm. 



23.5 cm. 



3:26 " 



19.5 " 



25.0 " 



22.5 " 



22.5 " 



3:33 " 



19.0 " 



25.0 " 



22.0 " 



22.0 " 



3-43 " 



19.0 " 



30.0 " 



22.0 " 



22.0 " 



3-46 " 



18.0 " 



29.0 " 



20.0 M 



20.0 " 



4:03 " 



18.0 " 



30.0 " 



18.0 " 



18.0 " 



4:20 " 



17.0 " 



30.0 " 



10. 0 " 



10. 0 " 



4:25 " 



16.5 " 



29.0 " 



9-5 " 



9-5 " 



4:40 " 



11. 0 " 



27.0 " 



8.5 " 



8.5 " 



5:iO " 



10.5 " 



10.5 " 



8.0 " 



8.0 " 



25 (1485) 



A note on the carbohydrates of the root of the cat-tail (Typha 



latifolia). 



By ZALIA Jencks (by invitation). 



[From the Sheffield Laboratory of Physiological Chemistry, Yale 

 University, New Haven, Conn.] 



In a recent communication 1 the root of the cat-tail has been 

 recommended as a valuable food product for man. An analysis 

 is recorded to indicate that the material contains 81 per cent, of 

 carbohydrates. No evidence is presented however, as to the 



1 P. W. Claasen, The Scientific Monthly, 1919, Vol. 9, No. 2. 



