LARKSPUR POISONING OF LIVE STOCK. 51 



parts of the Cochetopa and Uncompahgre National Forests. It is 

 more nearly related to the Delphiniurrh harbeyi than to Delphiniwrn 

 menziesii^ and should be classed as one of the tall larkspurs. The 

 entire feeding experiment with this plant was carried on at the ranch 

 of A. J. Hack, of Parlins, Colo. Two animals, Nos. 629 and 630, were 

 used for feeding. 



The feeding began at Y.15 a. m. on August 22. 1910. No. 630 ate 

 very little of the larkspur and was not affected by it. No. 629, weigh- 

 ing about 500 pounds, ate on August 22 about 20 pounds, which in- 

 cluded leaves, stems, flowers, and seeds. No effect was produced, and 

 at 6 a. m, on August 23 she seemed to be all right with the exception 

 of constipation, but at 10.35 she was found down on her side and 

 unable to rise. She struggled when approached, but was unable to 

 raise herself even upon her belly. At 10.40 respiration was 32 and 

 somewhat irregular. There was some trembling of the muscles of 

 the sides and some salivation. At 10 :45 the pulse was 80 and weak. 

 At 11.10 respiration'was 50, very irregular and shallow. At 11.31 she 

 arose without any marked difficulty, but at 11.37, after being run 

 about, she went down again, trembling before she fell. With assist- 

 ance she got upon her feet and started to run, but fell again. She 

 was up again at 11.42 and during the rest of the diO^j seemed to be 

 all right. In the evening she was given more of the Delphinium 

 rohustum^ it being estimated that she ate about 8 pounds. On the 

 morning of August 24 she was found down and unable to rise. A 

 little later she arose with some difficulty, but fell, getting upon her 

 feet again at 6.35, when she immediately fell and was unable to rise. 

 At 6,40 she got up and walked away. She started to run and fell, 

 but immediately got upon her feet, only to fall again, trembling as 

 she fell. At 6.45 she got upon her feet and walked about in a normal 

 manner. She was seen frequently during the forenoon and seemed 

 to be all right, with the exception of some constipation. 



It will be noticed that the symptoms as recorded are exactly com- 

 parable with those found in the cases of poisoning by Deljjhiniuin 

 harbeyi and Delphinium memiesii. 



EXPERIMENTAL FEEDING OF DELPHINIUM CUCULLATUM TO CATTLE. 



During the summer of 1912, at the Greycliff station, Delphinium 

 cucullatum was fed experimentally to six head of cattle with resulting 

 symptoms of poisoning in four, none of the cases resulting fatally. 

 One was only slightly sick and received no remedy. The second was 

 treated with arecoline with no apparent good results, but recovered 

 after treatment with magnesium sulphate, a glycerin enema, and a 

 hypodermic injection of whisky. The others were treated in the rou- 

 tine way worked out at Mount Carbon with physostigmin and pilo- 

 carpin and recovered. The symptoms were strictly comparable with 

 those produced by the other species of Delphinium and it does not 



