10 BULLETIN 1212, U. S. DEPARTMENT OF AGRICULTURE. 
whorled milkweeds as reported in Department Bulletin 969. In the 
minimum and maximum limits it resembled Asclepias galioides, with 
which it was about equally toxic. 
TABLE 2.—Time from feeding to symptoms. 
Time elapsed be- | 
Time elapsed be- 
; | Time elapsed be- . ; 
Animal. fore symptoms. Animal. fore symptoms. Animal. fore symptoms. 
Cattle: Hours.| Minutes. Sheep—C ‘on.| Hours.| Minutes. || Shee = Hours. | Minutes. 
No. 938. . 21 50 No. 685. . 10 tar. tlio. 662° tse 16 35 
No. 928. . 21 23 No. 691.. 16 33 | No. a5 ae ees 16 35 
Sheep: No. 651.. 17 46 pam 
No. 664. .| 3 24 No. 680.. 18 | 36 || Average (cattle). 21 36 
No. 663. .| 22 2 No. 670.. 10 | 55 | Average (sheep). 15 28 
No. 666. .| 3 23 No. 668... 21°| 39 | 
No. I 20 53 No. 677.. 22 | 35 | 
DURATION OF SICKNESS. 
Table 3 shows the time the sickness continued in those animals 
which recovered. As in Table 2, sheep 572 is not included. The table 
includes only those animals in which it was considered that the 
symptoms were positive. The times are from the first recorded 
symptoms to the last. The actual periods would be longer rather 
than shorter. 
TABLE 3.—Duration of sickness in cases of recovery. 
Animal. Duration of symptoms. Animal. Duration of symptoms. 
Cattle: Days. | Hours. | Minutes. || Sheep—Continued. Days. | Hours. | Minutes. 
ING: 58-0. Senecio 7 Lee eee 0) 668) 205 2/22 Ye Roe eee 23 40 
IN'O.926-2%.. Se 1 9 30 |) NO. 6WMecl-cecstegars 1 2 10 
Sheep: ING! 662020 ok eee ee al tee oes 1 10 
No oS er so eee ee 1 1 41 Wor 675722 <2 ets 2g 4 9 30 
IND? 6855255525 edon 2 2 2 15 
NO" 691.8. 2 ete es 7 1 40 Average (cattle)... 4 5 15 
i eg ty Ree Rarer 1 8 13 Average (sheep). - 2 1 28 
ae ae el a TT a 10 50 | 
The average duration in the sheep, 2 days 1 hour and 28 minutes, 
did not differ widely from that of A. mexicana, A. pumila, and 
A, verticillata var. geyeri, as shown in Department Bulletin 969. 
The longest periods were in cattle 938 and sheep 691, both of which 
were very sick. Sheep 662 had the shortest period, 1 hour and 10 
minutes, and showed only symptoms. Of the others, sheep 685 and 
sheep 675 were most affected and were sick longer than those which 
had simply symptoms. Generally speaking, the duration of illness 
was correlated with the degree of sickness. 
Only two cattle were used, and a larger number of experiments 
might have materially altered the average of these animals. 
Table 4 shows the time elapsing between the feeding and death in 
the cases which terminated fatally. 
Sheep 670 was sick the shortest time, 9 hours and 50 minutes. 
Sheep 695 had the longest period of illness, 6 days and 22 hours. 
The average time of all fatal cases, 2 days 6 hours and 43 minutes, 
