was carried by mosquitoes.

MANSON, PATRICK. Recent Advances in Science and Their Bearing on
Medicine and Surgery. _Jour. Trop. Med. & Hyg._, XI, pp. 337-338,
Sept. 16, 1908. Discussion of parasites and disease and their
methods of dissemination.

NEWSTEAD, R., DUTTON, J.E., AND TODD, J.L. Insects and Other
Arthropoda Collected in the Congo Free State. _Ann. Trop. Med. &
Parasit._, Vol. 1, No. 1, Feb. 1, 1907, pp. 3-100. An interesting
paper giving notes on many insects that cause or carry disease.

NUTTALL, G.H.F. Spirochaetosis in Man and Animals. _Jour. of Roy.
Inst. of Pub. Health_, 1908. Why Spirochaetes should be regarded as
Protozoa. Classification; list of blood-inhabiting forms; relapsing
fevers; transmission by ticks and other Arthropods.

O'CONNELL, M.D. The Oversea Transport of Insect-borne Disease.
_Jour. Trop. Med. & Hyg._, XI, 43, Feb. 1, 1908. Refers to article
in same journal (Jan. 15) and points out that malaria is very
likely to be transmitted by mosquitoes in this way.

OSBORN, HERBERT. Insects Affecting Domestic Animals. _U.S. Dept. of
Agric., Div. of Ento., Bull. No. 5_, N.S., 1896. Discusses the
various insect pests of man and domestic animals Host lists.
Bibliography.

RICKETS, H.T., AND WILDER, R.M. The Typhus Fever of Mexico. _Jour.
Amer. Med. Assn._, LIV, No. 6, Feb. 5, 1910, p. 463. Believes this
disease is transmitted by insects, probably lice.

RITCHIE, JAMES. A Review of Current Theories Regarding Immunity.
_Jour. Hyg._, 2, 1902, pp. 215-285, and pp. 452-464. Discussion of
various theories. Bibliography.

SHIPLEY, A.E. On the Relation of Certain Cestode and Nematoda
Parasites to Bacterial Disease. _Jour. of Eco. Biol._, 4, 1909, pp.
61-71. Shows that these parasites may often cause serious diseases
by opening the way for malignant germs.

WARD, H.B. Spirochetes and Their Relationship to Other Organisms.
_Amer. Nat._, 42, 1908, No. 498, pp. 374-387. Still undecided as to
whether they belong with bacteria or Protozoa, probably the latter.

WARD, H.B. The Relation of Animals to Disease. _Science_, N.S., 22,
1905, pp. 193-203. An interesting, comprehensive review of the
subject.

WARD, HENRY B. Relation of Animals to Disease. _Transactions of
Amer. Micro. Soc._, Vol. 27, 1907, pp. 5-20. The var