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what the Arctic navigator would term new leads, as well as 
give them the intelligent power to follow them out. I am 
satisfied that the two kinds of mental energies respectively 
involved in teaching and in pursuing new investigations 
act and re-act upon each other. That the man actively 
engaged in teaching is undergoing the best of preparations 
for other work, whilst the original investigator is of all men 
most likely to fulfil well the duties of a teacher, because he 
is more likely than other men to be animated by zeal and 
enthusiasm for the work upon which he is engaged. Origi- 
nal research, I believe, furnishes the best of training schools 
for the teacher, whilst the students will benefit by drinking 
at the running stream instead of at the stagnant pool. That 
a growing demand for teachers of physical science is spring- 
ing up is obvious. The grammar schools of Manchester, 
Bradford, and Giggleswick may be taken as examples of the 
change which a more enlightened public opinion is producing 
in the respective various parts of the kingdom. When we 
remember at how recent a period a small band of workers 
like Huxley and Brodie first insisted upon the necessity for 
a great change in both the primary and the higher education 
of the youth of Great Britain I confess I marvel at the 
wondrous results that have already been attained, and I 
look forward into the future with sanguine hope. Mean- 
while we experience a pressing want of a larger army of 
young workers. The case is one in which the old political 
maxim appears to be reversed in which supply will increase 
demand. It appears as if there were many great and vener- 
able educational establishments in this country which would 
enter heartily into the work of science teaching if they could 
obtain competent and judicious teachers — men who would 
not merely cram their pupils’ minds with isolated details but 
who were competent to make such teaching a real educa- 
tional instrument and not merely an exercise of the memory. 
This want appears to me to indicate the more immediate 
