74 LAB OR A TOR Y G UJDE IN PH YSIOLOG Y. 



(6) Through what average height was the weight 

 lifted ? 



(7) Has the value of k or g changed? 



(8) Give a formula for total height (H = ). 



(9) Give a formula for total work done (W=). 



(10) Express in ergs, the total work done by the muscle. 



(11) In the fatigue tracing did the lever continue 

 throughout the observation to fall back to the orig- 

 inalabscissa ? If not, describe any general changes 

 in the abscissa. 



c. Reaction changes. 



(12) Apply a piece of neutral litmus paper toj the 

 fresh muscle tissue of the frog from which your 

 specimen was taken. Record result. 



(13) Apply a piece of litmus paper to a fresh cut sur- 

 face of the fatigued muscle. Record results. 



(14) What is the reaction of the muscle of a frog 

 alter rigor mortis has been established? 



(15) What is *he reaction of fresh urine? 



