312 Seventeenth Annual Report of the 



Inspectors visiting the premises musl do so under the usual 

 precautions, rubber coat, hat, gloves and tall hunts, which are 

 thoroughly disinfected before leaving the premises. 



Any other person approaching or entering the premises must be 

 held guiltv of an infraction of the quarantine order and severely 

 punished. 



All hay, straw-, fodder, grain, etc., held on the premises during 

 the prevalence of the disease must he destroyed or disinfected. 

 Firmly packed hay, straw and fodder, except in the case of 

 exposure to water, does not admit the infection into its interior, 

 and such may he safely used by the herd or flock, or by horses, 

 after the surface layer has been forked off from above, and the 

 sides cut off with a hay knife to he burned. Exposure to dense 

 fumes of formaldehyde gas, generated from a mixture of formalin 

 and permanganate of potash, and confined over the surface of the' 

 fodder under a covering of tarpaulin, or canvas, which is held 

 above the surface of the fodder by wooden supports of an open 

 texture, is often resorted to, and should he kept up for some hours 

 or until the gas has escaped. When it is possible, it is Avell to feed 

 the remainder of the hay to the recovered herd which is, in any 

 case, for the time immune. Otherwise, it should be fed to horses 

 in the entire absence of the more susceptible animal-. 



Another valuable precaution is,- after the disinfection of the 

 building and premises and contents, to introduce one or more sus- 

 ceptible animals, and visit and examine them twice a week, watch- 

 ing carefully for results. If no disease develops it guarantees tha 

 absence of infection and danger and permits an earlier raising of 

 the quarantine. If, on the other hand, the test animal takes the 

 disease it shows that infection is still present, and after the 

 recovery of the case, a disinfection on a more thorough plan will 

 lie in order. If the former herd has been preserved it cannot suffer. 

 having jusl passed through the disease and acquired a satisfactory 

 inimunitv. 



WHOLESALE SLAUGHTER OF 'I'll!': SICK AND EXPOSED ANIMALS 



I have reserved this subject for the last that it might be more 

 fully considered in connection with widespread infection. Xo 

 one with a large experience of aphthous fever can do otherwise 

 than commend it highly when disease has been recognized among 



