188 



Headlee (T. J.). The Mosquitoes of New Jersey and their Control. 



— Nciv Jersey Agric. Expt. Sta., Ah^ic Brunsunck, N.J., 

 Bull. 348, 1st" January 1921, 229 pp., 129 figs. [Received 6th 

 September 1921.] 



This revision of a paper already noticed [R.A.E., B, iii, 212] also 

 describes the present position with regard to mosquito control in New 

 Jersey and discusses the work as carried out up to the end of 1919. 

 [R.A.E., B, ix, 26, 27, etc.] 



State Laws concerning Mosquito Control Work in New Jersey. — Neu^ 



Jersey Agric. Expt. Sta., New Brunswick, N.J., Circ. 110, 

 10th July 1919, 8 pp. [Received 6th September 1921.] 



The State laws of New Jersey of 1904, 1906, 1915 and 1912, as. 

 amended in 1919, concerning the control of mosquitos are given, 

 verbatim. 



Headlee (T. J.) & Carroll (M.). The Mosquito must go.— New- 

 Jersey Agric. Expt. Sta., Neiv Brunswick, N.J., Circ. Ill, 17th 

 April' 1919, 44 pp., 10 figs. [Received 6th September 1921.] 



A popular account is given of the advantages to be gained by sup- 

 pressing salt marsh mosquitos in New Jersey, and previous work is. 

 reviewed. It is proposed that the state of New Jersey shall expend 

 an average of about £45,000 annually to complete the drainage of 

 certain salt marshes in five years. 



Francis (E.). Tularaemia Francis 1921. I. The Occurrence of 

 Tularaemia in Nature as a Disease of Man. — Public Health Repts., 

 Washington, xxxvi, no. 30, 29th July 1921, pp. 1731-1738. 



An account is given of seven cases of tularaemia in Utah in 1919 

 and 1920 [cf. R.A.E., B, vii, 188]. The disease occurs from June to^ 

 August and originates from the bite of an insect, most probably 

 Chrysops discalis. The causal agent is Bacterium tularense, and the 

 fly acquires infection by biting jack rabbits suffering from the attack 

 of this organism. Inoculations and cultures prepared from ground 

 squirrels {Citellus mollis), also suspected of harbouring the disease, 

 produced lesions in guinea-pigs from which Bacterium tularense was, 

 isolated. 



Francis (E.) & Mavne (B.). Tularaemia Francis 1921. II. Experi-^ 

 mental Transmission of Tularaemia by Flies of the Species 



Chrysops discalis. — Public Health Repts., Washington, xxxvi,. 

 no. 30, 29th July 1921, pp. 1738-1746. 



As a result of these experiments, details of which are given, it was 

 found that Chrysops discalis is capable of carrying the infection of 

 Bacterium tularense in nature from infected jack rabbits to man. 

 Under laboratory conditions the flies were constantly infected up to- 

 five days, the longest period being fourteen days. The longer they were 

 kept the less tendency they showed to be infected, which would 

 indicate that C. discalis merely acts as a mechanical transmitter of 

 the disease and that the virus does not multiply in the fl}^ 



