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The E-Sylum:  Volume 4, Number 12, March 18, 2001, Article 11

BANISHING SILVERFISH AND SUNLIGHT 

   Joel Orosz writes; "In answer to the question from Adrian 
   Gonzalez, back when I was in graduate school, studying to be 
   a museum curator, the optimal conditions for book storage 
   were considered to be a constant environment of 65 degrees 
   Fahrenheit, with a relative humidity of 50%.  If the humidity is 
   lower than 45%, books dry out, if it is higher than 55%, mold 
   and mildew begin to grow on the paper. 

   I'm not well versed with the best current recommendations for 
   killing bookworms and silverfish.  In the old days, we used to 
   encase books in boxes suffused with a high concentration of 
   thymol, and leave them there for a week.  This killed mold, 
   mildew, bookworms and silverfish that were inside of  the 
   book.  On the down side, if used carelessly, thymol could also 
   kill the librarian! 

   It was also necessary, of course, to fumigate the entire library 
   room itself, since silverfish could be lurking outside of the books. 
   It would probably make sense to consult a professional 
   exterminator to see what pesticide is currently considered most 
   effective against silverfish." 

   Bob Knepper writes: "In E-Sylum, Vol. 4, No. 11, Joel Orosz 
   comments about the bad effects of sunlight on books.  To try 
   to minimize fading of carpets and furniture, I experimented with 
   UV filter glass and films for windows.  They yield some 
   improvement - but only a little.  Thus the solution given of 
   blocking all sunlight is still valid." 

  Wayne Homren, Editor

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