SYNOPSIS OF CONTINENTAL VETERINARY JOURNALS. 553 
(1840) all the works on the subject have simply reproduced 
Teissier’s formula, without commentary and without explana¬ 
tion. The question of what are the exact changes which 
occur in the bath when the ingredients are combined to¬ 
gether and during combination submitted to the action of heat 
ought to be carefully studied. In what proportions does the 
insoluble arsenite of iron and zinc form ? And in what 
proportions does the water of the bath afterwards contain 
arsenic ? Does the insoluble arsenite, held in suspension in 
the water of the bath, exercise any toxic action on the acari, 
efficacious in their destruction, and, therefore, is it of thera ¬ 
peutic value for sheep-scab ? These points must be studied 
experimentally. 
2nd. What occurs in the solution of arsenious anhydride 
when sulphate of soda is mixed with it instead of sulphate of 
iron or of zinc ? Is the arsenic dissolved more readily in 
sulphate of soda solution than in ordinary water? Does it 
form some arsenite of soda? Does the solution of sulphate 
of soda exert an emulsionifying action on the sebaceous 
secretion of the skin ? 
3rd. Given an arsenical soda bath, can it prove poisonous 
to sheep by cutaneous absorption? In other words, is the 
absorbent power of the skin such, in the ovine species, that 
fatal toxic accidents may occur in animals of this species in 
consequence of their immersion in an arsenical soda bath 
during the short time which the treatment of scab requires ? 
And, supposing such a bath inoffensive for sheep with 
healthy skins, is it so for those on the skins of which acari 
have determined special lesions which are characteristic of 
them, and give rise, by the itching which they occasion, to 
the abrasions resulting from friction ? 
4th. Finally, supposing that fatal accidents occur after 
immersion in the arsenical soda bath used with all necessary 
care to prevent absorption through any other channel than 
the skin, one more experiment ought to be made before death 
by poisoning is proved—demonstration of the presence of 
arsenic in the viscera ? 
From this we see how wide and complex is the question 
which the practical fact observed by M. Beucler brings up, 
and all the researches which would have to be undertaken 
to furnish the tribunal with a sure case, if an action for 
damages were brought against the pharmaceutist by whose 
error the sulphate of soda was substituted for sulphate of 
zinc in the arsenical bath of which M. Beucler had given the 
ordinary formula.” 
“ Typhoid Fever of Man attributed to the use of Diseased 
