...What will happenwhen those technies also deteriorate, and lose the will to work? Fordeteriorate they must, just as Senator Mollon and his still activeallies will... 
Various 「Astounding Stories, August, 1931」
...The twelve years of imposed peace have not been long enough seriously to deteriorate the people; but, inevitably, complete idleness will tell...
Stewart Edward White 「African Camp Fires」
...When your customers must take what you please to give them thequality of your goods is likely to deteriorate...
Richard Harding Davis 「The Congo and Coasts of Africa」
...Eggs for hatching must be shipped when they arefresh as duck eggs tend to deteriorate in qualityquite rapidly...
Harry M. Lamon 「Ducks and Geese」
...Since duck eggs deteriorate morerapidly than hens' eggs they cannot be kept so longbefore they are set...
Harry M. Lamon 「Ducks and Geese」
...It is notorious that most of our best European breeds deteriorate in India...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...Every thing having a tendency to affect thehealth may always be considered as calculated to diminish thissecretion, and, consequently, to deteriorate the quality of the wool...
Ambrose Blacklock 「A Treatise on Sheep:」
...Except when kept at almost freezing temperature, eggs that havebegun to decompose continue to deteriorate quite rapidly...
John H. Robinson 「Our Domestic Birds」
...The Bee is a corpse; and a little hustling here and there will not deteriorate its quality, provided there be no effusion of blood...
J. Henri Fabre 「More Hunting Wasps」
...They likewise suppose, butprobably without foundation, that the ore will be found to deteriorate inproportion as the workings descend...
H. G. Nicholls 「The Forest of Dean」
...The tendency in the compounds of colours to run into brownness andwarmth is one of the common natural properties of colours whichoccasions them to deteriorate or defile each other in mixture...
George Field 「Field's Chromatography」
...Butnature herself, to all ears attuned, sings pæans, and shoutsto men that the highest energy, that of life, does not deteriorate...
Henry Warren 「Recreations in Astronomy」
... why should it deteriorate in thefuture?...
Henry Warren 「Recreations in Astronomy」
...Notwithstanding the tendency of all high-class energy to deteriorate,to find equilibrium, and so be strengthless and dead, there is,somehow, in nature a tremendous push upward...
Henry Warren 「Recreations in Astronomy」
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