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BEES AND BEE-KEEPING. 
streak (F, Plate I.) ; that as the fluids of the grub 
fail, by loss of fats and albuminoids, the bacilli begin 
to swell centrally, as at < 5 , c, d, E, Fig. 122, drawing 
the mycoprotein from their extremities, and thus 
gradually become spores ; that after the death of 
the grub, and during the assumption of the viscid- 
putrid condition, this constant alteration of bacilli 
into spores continues; that after removal from the 
hive, it goes on so rapidly, that in a day or two 
scarcely a bacillus, as such, is discoverable, whilst 
the spores are innumerable ; and, in addition, that a 
very cautious preparation of some broken-down viscus 
will show that the bacilli and spores arrange them- 
selves in a most singular line fashion, as seen at 
F, Fig. 122, traces of which are visible at E, Plate I. 
As might have been imagined, in an attempt at 
repeating Schonfeld’s experiments, the supposed 
micrococcus did not multiply, but immediately dis- 
appeared, by conversion into the bacillus. 
The somewhat extensive literature of this disease 
had always gone on the assumption that it affected 
larvae, but larvae only. This position did not appear 
to me to agree with many facts I had observed ; 
e.g., we may take away two or three combs, containing 
5000 larvae each, from a stock, and it will continue 
to progress pretty much as though it had lost nothing; 
while, if foul brood attacks it, and kills, say, 1000 of 
its grubs, it, as a rule, very perceptibly diminishes in 
strength. The only theory that appeared to me as 
satisfactory, was that the adults also die with the 
disease, but that, according to a necessary instinct, 
they leave the hive, and finish their course alone. 
