  In 2004, Kim and Chan (KC) carried out torsional oscillator (TO) measurements
of solid helium confined in porous Vycor glass and found an abrupt drop in the
resonant period below 200 mK. The period drop was interpreted as probable
experimental evidence of nonclassical rotational inertia (NCRI). This
experiment sparked considerable activities in the studies of superfluidity in
solid helium. More recent ultrasound and TO studies, however, found evidence
that shear modulus stiffening is responsible for at least a fraction of the
period drop found in bulk solid helium samples. The experimental configuration
of KC makes it unavoidable to have a small amount of bulk solid inside the
torsion cell containing the Vycor disc. We report here the results of a new
helium in Vycor experiment with a design that is completely free from any bulk
solid shear modulus stiffening effect. We found no measureable period drop that
can be attributed to NCRI.
