304 Farm Poultry 



8. Eggs put in boiling water for twelve to fifteen seconds, 



50 per cent bad. 



9. Eggs treated with a solution of alum, 50 per cent bad. 



10. Eggs put in a solution of salicylic acid, 50 per cent bad. 



11. Eggs varnished with_water-glass (wasserglas), 40 per cent 



bad. 



12. Eggs varnished with collodion, 40 per cent bad. 



13. Eggs covered with lac, 40 per cent bad. 



14. Eggs varnished with sward, 20 per cent bad. 



15. Eggs preserved in ashes of wood, 20 per cent bad. 



16. Eggs treated with boric acid and water-glass, 20 per cent 



bad. 



17. Eggs treated with manganate of potassa, 20 per cent bad. 



18. Eggs varnished with vaseline, all good. 



19. Eggs preserved in lime-water, all good. 



20. Eggs preserved in a solution of water-glass, all good. 



"The last three methods are consequently to be 

 considered the best ones, especially the preserva- 

 tion in a solution of water-glass, as varnishing the 

 eggs with vaseline takes too much time, and the 

 treatment with lime-water sometimes commun- 

 icates to the eggs a disagreeable odor and 

 taste." 



Water-glass .* "We tried the keeping of eggs 

 with sodium silicate (water-glass) with good re- 

 sults. Sodium silicate is a compound containing 

 silicon, sodium and oxygen in the proportion of 

 one, two and three respectively. It can be pur- 

 chased from druggists in the form of a semi-fluid 

 resembling thick sugar syrup, for which it might 

 easily be mistaken. 



*24th Annual Report Ontario Agricultural College, pp. 193, 194. 



