40 HUMANE TREATMENT OF ANIMALS USED IN RESEARCH 
of course, the experiment was performed in the main by one licensee 
only, the others taking part in the capacity of assistants, in which case 
the experiment should be attributed to the principal licensee only. 
Care should be taken that, in such cases, the returns submitted by the 
respective licensees tally one with another. 
A very useful memorandum dealing with this question in more detail 
has been prepared by the Home Office. It is entitled Notes on 
Plurality of Experiments and may be obtained from the Inspector. 
APPENDIX I 
39 & 40 Vict., Cap. 77 
UNDERTAKING 
Whereas 
( Full name of applicant for licence in block letters) 
proposes, if duly authorized by the Secretary of State, to carry out certain experiments 
on living animals under my supervision, 
Now I 
of 
hereby undertake, in the event of a licence being granted : — 
(1) To explain the provisions of the Act to the licensee and to impress on him 
the importance of observing strictly the provisions of the Act and the terms 
and conditions of his licence ; 
(2) To see, to the best of my ability, that the provision of the Act and terms 
and conditions of the licence are so observed ; 
(3) To see that when he ceases to require the licence, and in any event before 
he leaves the country, he makes a Return (on the form used for the annual 
Return of Experiments) of every experiment he has carried out since the 
beginning of the year.* 
(4) Generally to make myself responsible for the due observance of the act by 
the licensee, and to see that his record of experiments is kept correctly and 
up-to-date. 
I understand that it will be made a condition of the licence, if granted, that all 
experiments shall be carried out under my supervision : and I understand further that 
if the experiments are not conducted strictly in accordance with this Undertaking, the 
licence will be liable to revocation. 
(Signature) 
Date 
* The form for this purpose is sent to him with his licence. 
14 
