THE WHORLED MILKWEED AS A POISONOUS PLANT. 
27 
more commonly the spasms continue until death. Generally the 
spasms occur at short intervals and there may be as many as 4 or 
5 in a minute. They become somewhat reduced in intensity toward 
the end. Death comes from respiratory paralysis. 
T <£ 7 & 9 /<?///£ 
X 
\ 
Fig. 3. — Temperature curve of Sheep 483. 
The symptoms may be considered as falling into four more or 
less clearly marked stages : 
1. A period of partial paralysis with staggering movements and 
falling. 
^ /a // /& * z jr <? s- e - ?- & & /o // /z? / z s <*■ & e 7 & s /o // /2 / g J» <? s~ £■ 7 
/OP' 
/oe 
X 
/OS 
/OO 
alN. A 
* *- — ^\ 
::::::::::t::::::i±::t::::::\ 
+r____ t _ti 
it i _ I i _TT____ 
°~\ . ^ T^- - J s . . . ,, . 
JL -- 1 -w 
Fig. 4. — Temperature curve of Sheep 492. 
2. A short period of violent spasms. 
3. A period of spasms accompanied with running movements. 
4. A period when spasms are of less intensity until death comes 
by respiratory paralysis. 
