02 
Bee Disease 
much difference of opinion as to the amount of harm caused by this latter 
malady. It is possible that Tarsonemus was present in the more severe cases 
and, consequently, a fresh series of observations are necessary. 
It is the opinion of the writer that the mite will prove a comparatively 
harmless parasite in countries where two or more honey harvests and con¬ 
stant breeding activity are the rule. In some such districts we may expect 
to find the endemic centres of the disease. 
If this opinion is confirmed, the mite will also be found in Australia, 
America and other countries as it is unlikely that we have been the only 
country to import it. In America there is a large amount of unexplained 
paralysis, and of winter and spring losses, while in Australia the subject of 
bee mortality is much discussed without anything very definite being known. 
Some of these troubles may be accompanied by mites. 
In this country bees parasitised by mites are to be found all over the 
kingdom from Land’s End to John o’ Groats. The recognition of the dangers 
arising from modern procedure may eventually give rise to wiser and better 
methods of beekeeping and the discovery of the Aberdeen investigators may 
thus have far-reaching and unforeseen consequences. 
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Anderson, J. (1916). The connection of Nosema apis and ; ‘Isle of Wight” Disease in Hive 
Bees. Proc. P. Physical Soc. of Edin. xx, 16. 
Anderson, J. and Rennie, J. (1916). Observations and Experiments bearing on Isle of 
Wight Disease in Hive Bees. Ibid, xx, 23. 
Berlepsch, Baron von (1869). Die Biene und Hire Zuchf. Mannheim. 
Beuhne, F. R. (1916). Nosema apis in Victoria. Journ. of the Dept, of Agric. of Victoria , xiv, 
Bevan, E. (1827). The Honey Bee. London. 
Critchlow, B. P. (16. vii. 1904). Gleanings in Bee Culture Medina, Ohio, xxxu, 692. 
Dadant, 0. (1907). Langstroth on the hive and Honey Bee. Revised by Dadant. Illinois, 
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Fleming, G. (1871). Animal Plagues. London. 
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(1912). Report on the Isle of Wight Bee Disease (Microsporidiosis). Supplement No. 8, 
Journ. of the Bd. of Agric. xix. 
Hannemann (1909). Cited by Zander (1911). 
Hirst, S. (1921). On the mite Acarapis woodi (Rennie) associated with the Isle of Wight 
Bee Disease. Annals and Mag. of Nat. Hist. Ninth Series, No. 42, 509. 
Langstroth, L. L. (1868). On the Hive and Honey Bee. Third Edition. Philadelphia. 
See also Dadant (1907). 
Maassen, A. (1911). Zur Aetiologie und Epidemologie der Ruhr bei den Bienenvolkern. 
Mitteilungen a. d. K. Biolog. Anstalt f. Land- und Forstwirtschaft, 50. 
Malden, W. (ii. 1909). Further Report on a Disease of Bees in the Isle of Wight. Journ. 
of the Bd. of Agric. xv, 809. 
Nussbaumer, T. (1912). Einige Erfahrungen Uber die Noscmakrankheit. Schiveizerische 
Bienenzeitung (Reprint). 
Rennie, J. and Harvey, E. (1919 a). Isle of Wight Disease in Hive Bees. Journ. of the 
Scottish Bd. of Agric. n, 176. 
-- (1919 b). Nosema apis in Hive Bees. Ibid, n, 511. 
Rennie, J., White, P. B. and Harvey, E. (1920). Isle of Wight Disease in Hive Bees. 
Trans. Boy. Soc. Edin. m, 737. 
Rennie, J. (1921). Notes on Acarine Disease. Bee World, m, 117. 
Silver, J. (1907). Bee Disease in the Isle of Wight. Irish Bee Journal, vii, 10. 
Tinsley, J. (1918). Preliminary Report on the Isle of Wight Bee Disease. Bulletin 85 IT. 
of Scotland Agric. Coll. Glasgow. 
Zander, E. (1911). Handbuch der Bienenkunde. 
