174 



living in the zones infected with rat plague were immune. Some cases 

 of human plague were due to infected flour and grain from mills and 

 warehouses infected with rat plague. As regards this last point, 

 experiments show that in artificially infected grain, the plague bacillus 

 can retain its virulence for not more than 14 days at temperatures 

 between 2° and 13° C. [35-6°-55-4° F.]. 



It follows that prophylactic measures against steamer rats cannot 

 be relied upon, that measures against the rats ashore are very necessary 

 in order that plague amongst them may be discovered and dealt with 

 without delay, and that cereals must not be taken from infected ware- 

 houses until 14 days have elapsed after their thorough disinfection. 

 Furthermore, all cereals from plague-infected localities must be the 

 subject of special supervision. 



DE BuEN (F.) & DE BuEN (S.). Note sull' Acclimatazione della 



"Gamhusia affinis." [Notes on the Acchmatisation of G. affinis.'] 

 — Ann. d'Igiene, Rome, xxxii, no. 4, April 1922, pp. 281-285, 

 4 figs. 



A consignment of Gambusia affinis , supplied by the U.S. Bureau of 

 Fisheries, was kept for four months in the aquaria of the Spanish 

 Institute of Oceanography. Dried cod-roe proved a suitable food, 

 but life in captivity hindered reproduction to a considerable extent. 

 Individuals that were placed in a pond in July 1921 (shortly after their 

 arrival) increased at a great rate, and when the rains at the end of the 

 winter caused the pond to overflow, the fish migrated to a neighbouring 

 stream. At the time of writing at least three generations were present. 

 It is intended to distribute the fish in order to study their action 

 on mosquito larvae. 



GiosEFFi (M.). La Malaria in Istria nel 1920. TMalaria in Istria in 

 1920.]—// Policlinico, Sez. Prat., 23rd January 1920 [sic\. 

 (Abstract in Ann. d'Igiene, Rome, xxxii, no. 4, April 1922, 

 pp. 307-308.) 



In winter no mosquito larvae were found in swamp water. The 

 first larvae of Culex and Anopheles appeared in April. Owing to the 

 exceptional drought no AnopheHnes were observed after August. 

 No larvae were found in a pool where fish had been placed in the 

 previous year. 



Di Pace (I.). Salinificazione di Raccolte d'Acqua anofeligene. [The 

 Salinity of Water harbouring Anophelines.] — La Malariologia, 

 1921, no. 6. (Abstract in Ann. d'Igiene, Rome, xxxii, no. 4, 

 April 1922, p. 311.) 



Anophehne eggs do not develop in sea salt-pans, even if laid in them. 

 Lakes, ponds and marshes close to the sea should be transformed 

 ■into salt-pans, a method suggested by the author in 1906, and used 

 with success by Fermi in Sicily. 



LusTiG (A.) & Franchetti (A.). [Report of the Pellagra Commission.] 

 — Lo Sperimentale, 1921, p. 187. (Abstract in Ann. d'Igiene, 

 Rome, xxxii, no. 4, April 1922, pp. 317-318.) 



The authors do not accept Sanbon's theory that pellagra is due to 

 a blood parasite transmitted by Simtdinm. Allessandri's observations 

 show Simuliids to occur nearly everywhere in Italy, including places 

 where pellagra does not exist. 



