(171) 



412 C. GORDON HEWITT. 



1900. Tooth, H. H. "Enteric Fever in the Army in South Africa/' 

 ' Brit. Med. Joura.,' November 10th, 1900. 



1901. " Some Personal Experiences of the Epidemic of Enteric 



Fever among the Troops in South Africa, in the Orange River 

 Colony," ' Trans. Clin. Soc.,' vol. xxxiv, 64 pp. 



1892. Uffelmann, J. "Beitrage /Air Biologic der Cholerabacillus," 



' Berl. klin. Wochenschr.,' 1892, pp. 1213-1214. 

 1898. Yeeder, M. A. " Flies as Spreaders of Disease in Camp," ' New 



York Med. Record,' vol. liv, September 17th, p. 429. 

 1856. Walker, F. ' Insecta Saundersiana, i, Diptera,' p. 345. 

 1908. Werner, H. " Tiber eine eingeisselige Flagellatenform im Darm 



der Stubenfliege,'.' * Arch, f . Protistenk.,' vol. xiii, pp. 19-22, 2 pis. 

 1881. Winter, G. " Zwei neue Entomophthoreen," 'Bot. Centralbl.,' 



vol. v, p. 62. 



X. APPENDIX. 



On the Breeding of M. domestica during the 

 Winter Months. 



In the account that I gave of the breeding habits of M. 

 domestica in the second part of this monograph, it was 

 stated (p. 503) that the experiments and observations pointed 

 to the fact that, in the presence of suitable larval food, such 

 as excremental matter or decaying and fermenting food 

 materials in a moist and warm condition, the female flies 

 would lay their eggs and the larvae would develop if the 

 temperature of the air was sufficiently high for the prolonged 

 activity of the flies. Flies are sometimes found under these 

 conditions in warm restaurants and kitchens, stables, and 

 cowsheds, and under these conditions are able to breed during 

 the winter months. I am pleased to find that my own observa- 

 tions and those of Griffith (there referred to) as to the ability of 

 M. domestica to breed during the winter months has been 

 confirmed by Jepson l during the past winter. 



Flies were caught in February (1909 j in the bakehouse of 



1 In " Reports to the Local Government Board on Public Health and 

 Medical Subjects (New Series, No. 5). Preliminary Reports on Flies as 

 Carriers of Infection. No. 3. Mr. Jepson's Report on the Breeding of 

 the Common House-Fly during the Winter Months," pp. 5-8, 1909. 



