64 
series of colorific glands ; one yellow, soluble in alcohol, the 
other purple, soluble in water ; the brown is probably made 
up of these two. 
“ On the Graphical Eepresentation of the Movements of 
the Chest-Wall in Respiration,” by Arthur Ransome, M.D., 
M.A. 
A stethograph has been constructed which gives an 
accurate tracing of the course described by any point on 
the chest- wall, in the forward and upward directions, i.e. 
in the vertical plane at right angles to the anterior surface 
of the chest. 
With this instrument many tracings have been made 
both in health and disease. The following, chiefly from 
the anterior ends of the third ribs, are selected as specimens 
of the results obtained, and to illustrate the conclusions 
drawn from them. 
It has been observed — 
1. That the anterior end of the rib takes a different course 
in its ascent from that of its expiratory descent. (Figs. 
1 and 2.) 
2. That in most cases the upper- 
most line is that of inspiration. 
8. That this course is liable to 
variation in consequence of the 
action of the will. (Figs. 8 and 4.) 
4. That in the action of cough- 
ing, after the inspiratory stroke, 
there is a slight forward bulging 
