134 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



ment. Many others of Captain Tizard's answers on pp. 

 96-100 throw the gravest doubts npon the validity of 

 conclusions drawn from such infrequent and scattered 

 observations as are proposed in the Christiania 

 programme. 



Then again in Appendix V. (p. 153), we find Captain 

 Tizard suggesting a scheme by which hydrographic 

 observations should be taken at stations 10 miles apart 

 along six sectional lines in the North Sea during 

 February, May, August and November. We do not know 

 whether these lines recommended by the Assistant 

 Hydrographer are now being investigated under the 

 international scheme, but in any case the results would 

 seem open to many of the objections shown by Captaiu 

 Tizard, in his evidence, to apply to all such occasional 

 observations in a shallow area like the North Sea. 



Dr. II. 11. Mill, an expert in hydrography, who has 

 himself conducted investigations on the physical con- 

 ditions of the waters round our coast, speaking of the 

 international investigations, of which he approved. (Q, 

 1,663), said : — " I should say that after ten years it would 

 be quite possible to get a very fair idea of the normal 

 conditions of things." It would be interesting to know 

 what he would expect to get after three years. Then, 

 again, he considers (Q. 1,716) that quarterly cruises would 

 not give sufficient information. In fact, Dr. Mill, 

 although he recommends the international scheme, and 

 Avas himself one of the British delegates to the Christiania 

 Conference, evidently from his answers (p. 74, &c), does 

 not consider that the observations taken in accordance 

 with the programme will be sufficient to enable us to base 

 sound conclusions within the limited time. 



It is important to notice also that the two expert 

 witnesses who have had most experience of practical 



