1 



of Copenhagen. Soon after, the Laboratory began to, 

 fulfil the obligation which it had accepted, viz. to dis- 

 pense antidiphtheric serum free of charge, as far as its 

 stock allowed. 



Unfortunately it was soon seen that the above-named 

 difficulties made it impossible to meet all demands. As 

 early as in November 1895, the dispensation of serum 

 had to cease for a time, in order to allow the Labora- 

 tory to increase the strength of the serum and to 

 immunise a large number of horses. Since then it 

 has certainly not been necessary to cease the dispen- 

 sation of serum, but during the first few years the 

 Laboratory has had to exert itself to the utmost in 

 order to satisfy the numerous demands made from all 

 parts of the country. In later years the productiveness 

 of the Department has been steadily increasing. The 

 following table shows the quantity of serum which 

 has been dispensed gratis by the Department during the 

 last two years: 



flasks containing Imm. Units. 

 From the 1st July 1900 till the 



1st July 1901 5036 17153000 



From the 1st July 1901 till the 



1st July 1902 . . 6305 24133000 



Iii 1896 the Director of the Laboratory sent out a 

 printed form of questions to all the doctors who had 

 been supplied with serum, in order to obtain their opi- 

 nion of the new remedy. The answers received showed 

 that, as a rule, the results of the serum treatment in 

 Denmark gave general satisfaction. The reports sent in 

 to the Board of Health from the medical officers of 

 health were to the same effect. We have also a strik- 

 ing proof from the well-known series of experiments 

 undertaken on a large scale by Professor ,1. Fibiger at 



