H of man

Deutsche Warte of Chicago; and the Deutsches
Volksblatt of Buffalo. He assumed the pen name
of Hans Buschbauer for these papers and for the
books he wrote on agricultural subjects. Attain-
ing great popularity and influence in his new
field, he was urged to reenter politics but de-
clined, continuing his literary activities and idyl-
lic life at his home, "Tusculum," until his death.

[J. H. A. Lacher, "Francis Arnold Hoffmann of 111.
and Hans Buschbauer of Wis.," Wis. Mag. of Hist.,
June 1930; Wis. Farmer, Dec. 29, 1893; F. I. Herriot,
"The Germans of Chicago and Stephen A. Douglas in
1854," Deutsch-Amerikanische Geschichtsblatter. Jahr-
buch der Deutsch-Amerikanischen Historischen Gesell-
schaft von III Jahrgang 1912, vol. XII (1913) J D. I.
Nelke, ed., The Columbian Biog. Diet. . .. of the Rep-
resentative Men of the U. S., Wis. Vol. (1895), Pp.
540-48; The Bench and Bar of Chicago (n.d.), pp. 465-
69; Who's Who in Americaf 1901-02; Milwaukee Jowr.t
Jan. 23, 1903; Milwaukee Sentinel, Jan. 24, 1903.]

J.H.A.L.

HOFMAN, HEINRICH OSCAR (Aug. 13,
i8S2-Apr. 28, 1924), metallurgist, was the son
of Prof. Carl Hofman of Heidelberg and Sophia
Proctor, an English woman. Born into an aca-
demic atmosphere he turned naturally to the
scholarly rather than the practical aspects of
metallurgy. By personal contact and correspond-
ence, however, he kept in close touch with the
metallurgists who were determining prevailing
practice, and he thus became the recognized au-
thority in his particular field of lead-smelting
and refining. In his student days at Heidelberg
and at the Mining Academy at Clausthal, from
which he was graduated with honors in 1877,
and also as a mining and metallurgical engineer,
he maintained a companionship with such emi-
nent German teachers as Kirchoff and Bunsen.
After four years of practical work in Germany,
he emigrated to America and was, for the next
four years, employed for brief periods successive-
ly at Mine La Motte; the Kansas City Smelt-
ing & Refining Company; the Delaware Lead
Works, Philadelphia; the Grand View Smelting
Company, Rice, Col.; and the Carmen Mining
Company in Mexico* In 1886 he was invited to
deliver a course of lectures at the Massachusetts
Institute of Technology, where for one year he
was lecturer on metallurgy. In 1887 he became
professor of metallurgy and assaying at the
South Dakota School of Mines, returning in
1889 to the Massachusetts Institute of Technol-
ogy as assistant professor of mining and metal-
lurgy. Upon the retirement of Prof. R. H. Rich-
ards in 1915, Hofman was made head of the de-
partment, and in 1922 upon his automatic re-
tirement, became emeritus professor. He was
by nature a profound student and was endowed
with remarkable power of concentration and an
unlimited capacity for work, so that little in the

Hogan

current scientific and technical literature escaped
his notice and discriminating consideration. He
thus had instant command of this great store of
knowledge, whether in the lecture room, in sim-
ple friendly converse with congenial friends
from the metallurgical field, or in the compilation
of the manuscripts for his publications. His first
book, The Metallurgy of Lead and the Desilveri-
zation of Base Bullion, was published in 1892 and
ran through several editions, becoming an ac-
cepted standard. It was entirely rewritten in
1918. He also wrote An Outline of the Metal-
lurgy of Iron and Steel (1904); General Met-
allurgy (1913); Metallurgy of Copper (1914) ;
Metallurgy of Zinc and Cadmium (1922); and
an unpublished study on the metallurgy of gold
and silver and of minor metals. In addition, he
furnished annually, from 1892 until 1919, notes
on current progress in the metallurgy of lead for
Mineral Industry. Hofman was married in 1883
to Josephine Loughead, of Philadelphia, whose
acquaintance he had made during his student
days in Germany. It was largely through her
encouragement and assistance that he wrote Met-
allurgy of Lead in English. She lived, however,
only a few years after their marriage, and on
Aug. 5, 1902, Hofman married Fannie E. How-
ell of Boston, who with one son and one daughter
survived him. He was a persistent worker, al-
lowing himself but short vacations, his principal
relaxation being music.

[Engineering and Mining^ Journal-Press, May 3,
1924; Trans. Am. Inst. Mining and Metallurgical En-
gineers, vol. LXX (1924) ; Who's Who in America,
1922-23; Technology Rev.9 July 1924; Boston Tran-
script, Apr. 29, 1924; personal acquaintance; informa-
tion as to certain facts from Hofman's associates at
the Mass. Inst. of Technology.] Rt Q Q__y;

HOGAN, JOHN (Jan. 2, i8os-Feb. 5, 1892),
Methodist preacher, business man, congressman,
was born at Mallow, County Cork, Ireland, the
son of Thomas and Mary (Field) Hogan. His
mother died in Ireland when he was ten years
old. He and his father came to Baltimore in 1816,
where the latter died a year later. As a youth,
he was apprenticed to James Hance, manufac-
turer of boots and shoes, and from him and
another apprentice he learned to read. At the
age of sixteen he became a Methodist convert
and within five years was granted a license to
preach. For several years he served as an itin-
erant preacher, part of the time as companion to
Bishop Soule, with whom he left Baltimore for
the West and traveled more than eight hundred
miles on horseback; the rest of the time he was
engaged on the St. Louis Circuit, which com-
prised the territory along the south bank of the
Missouri River from St. Louis to Boonville. In

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