25 



to be desired, when the local conditions are considered. I wish to 

 call especial attention to the fact that with the exception of two 

 cases of inborn tuberculosis and the one doubtful case at the last 

 test, thus far no animal born in the reacting division* since the 

 beginning of the experiment has later shown itself to be tuberculous. 

 T}ie 'practicability of the method is hereby proven. 



At the last test the healthy division consisted of three grown bulls, 

 one two-year-old ox, three yearling bulls, 73 cows, 17 two-year-old 

 heifers, 31 yearling heifers, and four small calves. The number of 

 milch cows is thus at present larger than that of the reacting. Most 

 of the healtlw animals were born on the farm, only a few were pur- 

 chased during the first years. These animals were of course tested 

 with tuberculin before being received. The experiment at Thureby- 

 lille has been conducted at considerable cost to the state on a special 

 appropriation. The expenses have been only partially due to 

 measures necessarily attendant on such an experiment, such as for 

 instance, changes in stable arrangement, the wages of a special man 

 for feeding the healthy division, etc. The frequent inoculation of 

 young calves occasioned some expense. This might be omitted. A 

 large part of the cost was due to my dissections of the butchered 

 cows ; because of the unreasonable advantage which the butchers 

 always took in paying only a very low price whenever it was 

 demanded that the animals be sul)jected to close examination. On 

 other farms, where the experiments have a purely practical object, 

 the expenses are of course nmch less. In comparison with the losses 

 which tul)erculosis causes from year to year they are insignificant 

 especially when the investigation itself is entirely or nearly free of 

 cost as in Denmark. 



The division of the stable by a wooden partition costs but 

 little. More radical changes cause greater expense. The experi- 

 ment at Thurebylille has shown that such are not absolutely neces- 

 sary, but very complete separation would better insure quick 

 success, and under certain circumstances it would perhaps pay to 

 make greater sacrifice in the beginning. In Denmark, the condition 

 on which the free tuberculin test is offered is that the owner prom- 



*The mothers of these animals and the fathers of most of them had tubercu- 

 losis. Two healthy hulls were at first placed in the reacting division in accord- 

 ance with the wish of the owners. As was to he foreseen, both reacted within a 

 year. They remained apparently healthy and served constantly in the division. 

 One was butchered this autumn (lSi)5) and had insignificant tuberculosis in one 

 lung and in the mediastinal ami bronchial glands. 



