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Judging by errors in the computational-fluid-dynamics literature in recent years, it is not generally well understood that (above first-order) there are significant differences in spatial truncation error between formulations of convection involving a finite-difference approximation of the first derivative, on the one hand, and a finite-volume model of flux differences across a control-volume cell, on the other. The difference between the two formulations involves a second-order truncation-error term (proportional to the third-derivative of the convected variable). Hence, for example, a third (or higher) order finite-difference approximation for the first-derivative convection term is only second-order accurate when written in conservative control-volume form as a finite-volume formulation, and vice versa.

1Poems on Travel

By Robert Maynard Leonard and Various

This volume of poetry takes the reader, or rather the listener, along on a literary tour through Europe. R.M. Leonard has collected the finest (as of 1914) poems by some of the most celebrated poets of the English language, all covering the subject of travel, and often concerning travelling to a certain city or region in Europe. - Summary by Carolin

2Candle and the Cat

By Mary Finley Leonard

"To the memory of TROLLEY, This little story is dedicated." <br><br> When young Caro goes to stay with her Aunt and Grandfather, the seminary president, she learns to not be afraid of the dark and to "be a candle" by "sharing her light" with the help of Trolley the cat. In doing so, she is able to help others, including a reclusive invalid, renew their old friendships. - Summary by JHedrick