IV PREFACE. 



the preparation of the instructions. In such cases it has 

 been thought best not to incorporate the instructions relating 

 to the same subject, but to leave them under the names of 

 those who drew them up ; partly to maintain the principle 

 of individual responsibility, partly because the observers 

 would more readily enter into the spirit of the instructions 

 if the different points of view from which the same subject 

 was regarded were separately presented to their minds. 



The preparation of the Manual of Scientific Eesults 

 was entrusted to the care of Prof. Rupert Jones, F.R.S., as 

 Editor in chief, who also undertook himself to compile the 

 part relating to Zoology, Botany, Geology, and Mineralogy. 

 The Committee appointed Prof. W. G. Adams, F.R.S., Sub- 

 editor, to assist Prof. Rupert Jones by compiling the pai-t 

 relating to Physics. The Manual will be found at the end 

 of the Instructions. 



