Wuerzburger Med. Klinik_, 1885 (vol. 1).

[285] _New York Herald_, Mar. 24. 1912.

[286] _Tea & Coffee Trade Jour._, 1914 (vol. xxvi: pp. 537-41).

[287] _The Influence of Alcohol and Other Drugs on Fatigue._

[288] "The Influence of Caffeine on Mental and Motor Efficiency."
_Archives of Psychology_, 1912 (no. 22).

[289] _Revista sper. di. Freniatria_ (vol. xviii: p. 1).

[290] _Archiv. ital. de Biol._, 1893 (vol. xix: p. 241).

[291] _Inaug. Diss._, Marburg, 1894.

[292] _Revista sper. di Freniatria_, 1894 (vol. xx: p. 458).

[293] _Centralbl. f. Physiol._, 1896 (vol. x: p. 126).

[294] _Psychol. Arbeit._, 1896 (vol. i: p. 378).

[295] _Jour. Med. de Bruxelles_, 1897.

[296] _Molcschott's Untersuchungen_, 1899 (vol. xvi: p. 170).

[297] _Archiv. f. Anat. u. Physiol. (Physiol. Abth.), Suppl. Bd._, 1899
(p. 289).

[298] _Skand. Arch. f. Physiol._, 1904 (vol. xvi: p. 197).

[299] _Travaux du Lab. de Physiol. Inst. Solray_, 1904 (vol. vi: p.
361).

[300] _Psychol. Arbeit._, 1901 (vol. iii: p. 617).

[301] _C.R. de la Soc. de Biol. Paris_, 1901 (pp. 593-627).

[302] _Op. Cit._ (p. 38). (See 285.)

[303] _Pfluegers Archiv._, 1877 (vol. xvi: p. 316).

[304] _Diss._, Dorpat., 1887.

[305] _Psychol. Arbeit._, 1896 (vol. i: p. 431).

[306] _Psychol. Arbeit._, 1901 (pp. 203-289).

[307] _Psychol. Rev._, 1911 (vol. xviii: p. 424).

[308] _Op. Cit._ (see 285).

[309] _Ueber die Beeinfluessung einfacher psychischer Vorguenge durch
einige Arzeneimittel_ (p. 224).

[310] _Arch, exp. Path. Pharm._, 1920 (vol. lxxxv: pp. 339-58).

[311] _Op. cit._ (p. 50). (See 287.)

[312] _Loc. cit._ (see 285).

[313] See chapter XXX.

[314] La Roque, Jean, _Voyage de l'Arabic Heureuse_, Paris, 1715. (p.
280.)

[315] _Encyclopedia Britannica_, 11 ed., Cambridge, 1910. (vol. i: p.
118.)

[316] La Roque, Jean. _Voyage de l'Arabie Heureuse_, Paris, 1715 (p.
285).

[317] The 1921 figures for all countries given are preliminary.

[318] Broadbent, Humphrey. _The Domestick Coffee Man._ London, 1720.

Bradley, Richard. _The vertu and use of coffee with regard to the plague
and other infectious distempers._ London, 1721.

[319] Since changed. There is now a Clearing Association.

[320] _Tea and Coffee Trade Jour._, 1911 (vol. xx: no. 4: p. 284).

[321] _Tea and Coffee Trade Jour._, July, 1911 (vol. xxiii: no. 1; p.
28).

[322] _Tea and Coffee Trade Jour._, Nov., 1910 (vol. xix: no. 5: p.
380).

[323] _Tea a