v] Scrqphularinex, Polygonaceae 63 



vomit and repeatedly passing small quantities of faeces. Urination was 

 scanty and strained. 



In a case of poisoning among horses to which Muller refers the animals 

 had an exhausted appearance, there was loss of appetite, increasing 

 thirst, often also colic, and later diarrhoea, urination often in great 

 quantity, and staggering. Some of the animals died after a few days in 

 convulsions. 



REFERENCES. 



4, 16, 73, 76, 79, 81, 161, 170, 187, 190, 203, 

 204, 205, 213, 229, 252, 257. 



LoQsewort {Pedioularis, sp.). Two species of lousewort are involved, 

 P. palustris L. and P- sylvatica L., and though both are regarded as 

 poisonous the ejctent to which they are so is not well known. They 

 have an impleasant smeU and sharp taste, and are in general refused by 

 all classes of stock. P. sylvatica may be eaten when young (Cornevin). 

 Lindley says that both plants are acrid, but are eaten by goats. P. 

 palustris is regarded by Pott as an acutely poisonous plant, especially 

 for sheep. A decoction of these plants was formerly used against lice, 

 and hence the trivial name. 



Toxic Principle. Very Uttle appears to be known about the poison- 

 ous principle, but, like Rhinanthus and Mdampyrum, they have been 

 found to contain the glucoside Rhinanthin (see p. 96). 



Symptoms. The plants are held to be emetic and purgative; to 

 cause inflammation of the digestive tract, and to cause anaemia in cattle. 

 Brugmann stated (vide Cornevin) that if, pressed by hunger, animals 

 eat P. palustris, the first consequence is hsematuria. Muller also notes 

 haematuiia. 



REFERENCES. 

 73, 76, 81, 190, 203, 213. 



POLYGONACEiE. 



Docks (Rumex sp.). In general it is probable that but little harm 

 is done by species of Rumex, but owing to the fact that Common Sorrel 

 {R. Acetosa L.) and Sheep's Sorrel {R. Acetosella L.) contain acid oxalates 

 they may on occasion prove injurious. Instances have been recorded 

 in which children have suffered from eating the leaves of the former 

 species in considerable quantity, and both species have been accused 



