OF MOVEMENTS OF CHEST-WALL IN RESPIRATION. 



263 



The four tracings, figs. 25-28, are taken from a female, 



set. 26, who had acute pleurisy with effusion nine months 

 before, and in whom there was considerable contraction of 

 the left side in consequence. The first two are from the 

 third rib, the last two from the fifth. Figs. 26 and 28 

 are from the diseased side. 



In all these cases the comparative feebleness of the 

 respiratory acts are to be noticed, and the want of elasticity 

 of the chest is evidenced by the tendency to similarity in 

 the upward and downward track of the end of the rib. In 

 the case of acute phthisis there is also a degree of tremu- 

 lousness in the original tracing ; and the case of pleurisy 

 displays the effect of the subsequent adhesions in the very 

 small extent of the forward push on the affected side. It 

 is interesting to notice that the phthisical cough portrayed 

 in fig. 20 is similar in its form to that of the healthy chest 

 fig. 6, although so much smaller and more feeble. 



Note. — Since this paper was written, a modification of 

 the instrument has been kindly suggested by Mr. Gibbon, 

 Assistant in the Physiological Laboratory at the Owens 

 College. In order to obviate any risk of error from the 



