] It involves the theory of non-Euclidean geometry, Euclid's postulate
of parallels being used in proving this theorem.

[172] Referring to the fact that none of the works of Thales is extant.

[173] The author was one B. Bulstrode. Parts 4 and 5 were printed at
Calcutta.

[174] See Vol. II, page 5, note 18.

[175] See Vol. I, page 85, note 2 {129}.

[176] Alexander Vasilievich Suvaroff (1729-1800), a Russian general who
fought against the Turks, in the Polish wars, and in the early Napoleonic
campaigns. When he took Ismail in 1790 he sent this couplet to Empress
Catherine.

[177] "Newton hath determined rightly," "Newton hath not determined
rightly."

[178] See Vol. I, page 288, note 3 {621}.

[179] See Vol. I, page 326, note 1 {700}.

[180] "With great honor."

[181] Apparently unknown to biographers. He seems to have written nothing
else.

[182] Captain Marryat (1792-1848) published _Snarley-yow, or the Dog Fiend_
in 1837.

[183] He is not known to biographers, and published nothing else under this
name.

[184] See Vol. I, page 80, note 5 {119}.

[185] He published a _Family and Commercial Illustrated Almanack and Year
Book ... for 1861_ (Bath, 1860).

[186] Louis Dutens (1730-1812) was born at Tours, but went to England as a
young man. He made the first collection of the works of Leibnitz, against
the advice of Voltaire, who wrote to him: "Les ecrits de Leibnitz sont
epars comme les feuilles de la Sybille, et aussi obscurs que les ecrits de
cette vieille." The work appeared at Geneva, in six volumes, in 1769.

[187] Mungo Park (1771-1806), the first European to explore the Niger
(1795-6). His _Travels in the Interior of Africa_ appeared in 1799. He died
in Africa.

[188] Gerhard Mercator (1512-1594) the well-known map maker of Louvain. The
"Mercator's Projection" was probably made as early as 1550, but the
principle of its construction was first set forth by Edward Wright (London,
1599).

[189] Quirico Barilli Filopanti wrote a number of works and monographs. He
succeeded in getting his _Cesare al Rubicone_ and _Degli_ _usi idraulici
della Tela_ in the _Memoria letta ... all' Accademia delle Scienze in
Bologna_ (1847, 1866). He also wrote _Dio esiste_ (1881), _Dio Liberale_
(1880), and _Sunto della memoria sulle geuranie ossia di alcune singolari
relazioni cosmiche della terra e del cielo_ (1862).

[190] The periods of disembodiment may be interesting. They will be seen
from the following d