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Mazzuoli (S.). Osservazioni suUa peste aviaria. [Observations on 

 fowl plague.] — Clinica Veterinaria, Milano, xxxviii, no. 1, 15th. 

 January 1916, pp. 1-6, 



A number of experiments are described which relate to the mechanism 

 of transmission of fowl plague. In one of these, two fowls infested with 

 Argas persicus were kept together in a cage, one having been inoculated 

 with the virus. After death, which occurred after 36 hours, its 

 body was allowed to remain near the other fowl, which was unaffected. 

 The same negative result was obtained when the experiment was 

 repeated. 



Hutchison (R. H.). Notes on the preoviposition Period of the House 

 Fly, Musca domestica, L. — U.S. Dept. Agric, Washington, D.C., 

 Bull. no. 345, 5th February 1916, 14 pp., 1 fig., 3 tables. 



Experiments on the preoviposition period of Musca domestica were 

 carried out at Arlington. Ya., and New Orleans during 1913 and 1914. 

 Laboratory-bred flies were used in the investigations, originating from 

 larvae or pupae found in manure heaps. Adult flies were kept in cages 

 22 inches high by 12 inches square ; the cages were protected from the 

 direct rays of the sun. but were exposed to air currents and to outdoor 

 conditions of temperature and humidity. Flies were transferred 

 to the cages soon after emergence and were supplied with 

 food and media for oviposition. The preoviposition period 

 was found to vary between 2| and 23 days. The shortest 

 records occurred in midsammer, and the longer ones during autumn, 

 thus showing that temperature has a marked influence on the length 

 of the period. It is also dependent on humidity, quality of food of 

 adults, and quality of the larval food with the resulting effect on the 

 size and physiological condition of the adult. Lack of water proved 

 fatal to adults. Bananas, water and manure were found to be suitable 

 foods. In experiments with isolated pairs of flies very few results 

 were obtained ; this suggests that the association of a number of 

 females in the process of egg-laying is the normal habit and that 

 isolation has an inhibiting effect. The date of pairing varied from the 

 first to the forty-seventh day after emergence, and pairing did not 

 occur when the temperature was below 55° F. The maximum 

 longevity was 70 days, the minimum less than one day, while the 

 average of the records of about 3,000 flies was slightly more than 

 19 days. 



Sur Taction des capsules de sulfure de carbone contre les larves de 



Gastrophilus equi. [On the action of capsules of carbon bisulphide 

 on the larvae of Gastrophilus equi.] — Becueil de MSd. Vet. publie 

 a VEcole d'Alfort, Paris, xcii, nos. 1-2, 15i;h January — 15th 

 February 1916, p. 105. 



This article records the successful use of capsules of carbon bisulphide 

 in killing larvae of Gastrophihis equi in horses. In this case three horses 

 were first purged with 20 grammes of extract of aloes, and on the 

 following day four 10-gramme capsules were administered at one-hour 

 intervals, before feeding. From the next day onwards, numerous 

 dead Oestrid larvae were expelled ; no injurious effect was observed 

 in the animals. 



