MEMOIR OF THE LATE DR. HENRY. 127 
or the manners and mental habitudes of its in- 
habitants. He has thus strongly expressed his 
sense of the value and dignity of such personal 
labours and perils in the cause of science. “No 
subject within the compass of human knowledge 
embraces so wide a sphere of enquiry, or so 
much tends to gratify an enlightened and liberal 
curiosity, as voyages and travels undertaken 
with aright aim and by persons qualified to 
reap their rich and varied fruits. To those 
engaged in them, are offered all the fascination 
of novelty, all the hopes of wider and brighter 
prospects of the moral and natural world; all 
the warm impulses of an honourable ambition 
to live beyond the present times, and to be 
remembered by conquests more glorious and 
more useful than those of the field. These 
high motives kindle and keep alive a spirit which 
sustains them through toils, difficulties and dis- 
appointments, and enables them to triumph 
over physical privations and pains, which would 
dishearten the stoutest if encountered in the 
every day transactions of life.” Biography, 
especially that of men devoted to the pursuits 
of philosophy, always occupied him most agree- 
ably,—carrying back his intellectual sympathies 
to distant periods, and supplying him with 
materials for after-thought and speculation. His 
