  Red giants show a large number of absorption lines in both optical and
near-infrared wavelengths. Still, the characteristics of the lines in different
wave passbands are not necessarily the same. We searched for lines of Mg I, Si
I, Ca I, Ti I, Cr I, and Ni I in the z', Y, and J bands (0.91-1.33 $\mu$m),
that are useful for precise abundance analyses, from two different compilations
of lines, namely, the third release of Vienna Atomic Line Database (VALD3) and
the catalog published by Melendez & Barbuy in 1999 (MB99). We selected
sufficiently strong lines that are not severely blended and ended up with 191
lines (165 and 141 lines from VALD3 and MB99, respectively), in total, for the
six elements. Combining our line lists with high-resolution (R = 28,000) and
high signal-to-noise (higher than 500) spectra taken with the WINERED
spectrograph, we measured the abundances of the six elements in addition to Fe
I of two prototype red giants, i.e., Arcturus and mu Leo. The resultant
abundances show reasonable agreements with literature values within $\sim$0.2
dex, indicating that the available oscillator strengths are acceptable,
although the abundances based on the two line lists show systematic differences
by 0.1-0.2 dex. Furthermore, to improve the precision, solid estimation of the
microturbulence (or the microturbulences if they are different for different
elements) is necessary as far as the classical hydrostatic atmosphere models
are used for the analysis.
