tungsten compounds (1824); the preparation of aluminum (1827); of
glucinum and yttrium (1828). In 1856, working with Ste. Claire Deville,
he discovered crystallized boron.

Analytical methods were improved in many ways, and excellent new methods
were introduced by him. Further, he did a great deal for the improvement
of the processes of applied chemistry.

With Liebig he was associated in editing the "Annalen der Chemie and
Pharmacie" and the "Handwörterbuch der Chemie." He wrote a remarkably
useful and popular "Grundriss der Chemie." The part relating to
inorganic chemistry appeared first in 1831, and was in use until a few
years ago, when Fittig wrote his "Grundriss" on the same plan, a work
which supplanted its prototype.

The above will serve to give some idea of the great activity of Wöhler's
life, and the fruitfulness of his labors. While thus contributing
largely by his own work directly to the growth of chemistry, he did
perhaps as much in the capacity of teacher. Many of the active chemists
of the present day have enjoyed the advantages of Wöhler's instruction,
and many can trace their success to the impulse gathered in the
laboratory at Göttingen. The hand of the old master appears in
investigations carried on to-day by his pupils.

Wöhler's was not a speculative mind. He took very little part in the
many important discussions on chemical theories which engaged the
attention of such men as Dumas, Gerhardt, Berzelius, and Liebig, during
the active period of his life. He preferred to deal with the facts as
such; and no one ever dealt with the facts of chemistry more
successfully. He had a genius for methods which has never been equaled.