REPORTS, 1900 



357 



more than in 1899 ; the increase in the number of experiments 

 included in Table III. (A.) is 229, and in Table III. (B.) 2141. 



But few of these experiments have been in any serious 

 degree painful. Taking first the experiments recorded in 

 Table III. (A.), 1885 in number, the experiments performed 

 under license alone, or under Certificate C, together amount- 

 ing to 1299, are unattended by pain, because the animal is 

 kept under an anaesthetic during the whole of the experiment, 

 and must, if the pain is likely to continue after the effect of 

 the anaesthetic has ceased, or if any serious injury has been 

 inflicted on the animal, be killed before it recovers from the 

 influence of the anaesthetic. 



In the remaining 586 experiments, performed under Certi- 

 ficate B, or B linked with EE, the operations are performed 

 under anaesthetics, from the influence of which the animals 

 are allowed to recover. The operations are performed asepti- 

 cally, and the healing of the wounds as a rule takes place 

 without pain. If the antiseptic precautions fail and suppura- 

 tion occurs, the animal is required to be killed. These opera- 

 tions as now practised are seldom, if ever, followed by pain. 

 I have seen numerous animals on which serious operations 

 have been performed, removal of organs and the like, and 

 which were clearly not in pain ; indeed, they were often to 

 all appearance in perfect health. 



The experiments included in Table III. (B.), 8954 in 

 number, are all performed without anaesthetics. They are 

 mostly inoculations, but a few are feeding experiments, or 

 the administration of various substances by the mouth. In 

 no case has a certificate dispensing with the use of anaes- 

 thetics been presented for an experiment involving a serious 

 operation. 



The pain caused by a hypodermic injection is so slight that 

 such a procedure in itself could hardly be regarded as coming 

 under the Act. But the experiment does not terminate with 

 the injection. The effect of the injection may be to set up a 

 condition of disease accompanied by pain, and the experiment 

 continues until the animal recovers, or dies, or is killed. This 

 effect may not manifest itself for a considerable time, extend- 

 ing perhaps over several days, and the certificate dispensing 



