260 DR. A. RANSOME ON GRAPHICAL REPRESENTATION 



track of quick inspiration, and afterwards the downward 

 drop of the rib, followed immediately by a very strong in- 

 drawing of its end. The differences observable are the 

 absence of any stoppage at the commencement of expi- 

 ration, and the much more complete indrawing in the 

 second half of the expiratory act. The first portion is 

 strikingly similar in its course to the hypothetical curve, 

 its ordinates being about 0*5 in. of downward drop for 

 0*15 of indrawing; those of the curve given in fig. 5 are 

 0*8 downwards and o - 2 inwards. 



In the second part of its expiratory track the end of the 

 rib only drops about 0*15 in. to o - 8 in. of indrawing, and 

 for six tenths of an inch its course is almost horizontal. I 

 would again repeat that such a movement seems to me 

 impossible without an inbending of the rib. 



Figs. 9, 10, and 1 1 are introduced to show the variations 



occasionally produced by individual peculiarities: — first, in 



