MEMOIR OP BARON HALLER. 21 
of organic life which his skill so admirably preserved, 
conferring on them all the semblance and freshness 
of life, without its inherent tendency to decay; 
whilst he himself, now a nonagenarian, shrivelled 
with years, yet always active and laborious, more 
remarkable than any of them, seemed to add to his 
secret of preserving them, the still more wonderful 
ait of in more ways than one, immortalizing and 
preserving himself. 
Animated by such examples as these, Haller 
laboured night and day with indefatigable zeal ; so 
that he very soon deranged his health, which forced 
him for a time to quit his studies. On his return 
to Leyden, at the age of nineteen, he took his 
Doctor’s degree, and speedily afterwards quitted 
Holland on a visit to England. Hans Sloane was 
now president of the Royal Society, and Douglas 
and Cheselden were amongst its most distinguished 
members. In London, it was the object of Haller 
rather to make the acquaintance of eminent men 
than to prosecute his studies ; and in this design he 
succeeded to his entire satisfaction. Before leaving 
England he paid a visit to Oxford ; and then passed 
over to France, where he became an inmate in the 
family of Ledran, and familiar with M. Geofiroy, 
the Jussius, J. L. Petit, and especially the celebrated 
Winslow, whose pupil he delighted to designate 
himself. 
Being again threatened with ill health, Haller 
left Paris with the intention of visiting Italy ; but 
the fatigues of the journey proving too much for 
