Q. We have been given what is called a Cheval Glass. Can you tell its history? A. It was said to be large enough to reflect a horse. It was a pleasantry in regard to a full-length mirror. Q. Why were there no teaspoons in our grandmother's silver set of pearl-handled knives and forks? A. Possibly in the time period in which your silver was made, teaspoons were not popular as a part of the set. Usually they were placed in decorative containers of glass or porcelain and passed around the table for the diners. Q. What's a shield-back chair? A. Designed by Hepplewhite, the chair has a back made in the form of the American shield. It's one of our most popular period furnishings. Q. We've been given a metamorphic library chair. Apparently it's stuck, because it's just a chair with a lot of wood, and it doesn't move. Can you explain? A. It was a chair that was popular in days when ceilings were high. It could be unfolded into a chair with three steps. It would pay you to have it professionally repaired. T. We wrote to some of the places which you recommended for replacing Haviland china. Why didn't we hear back? A. If you don't enclose a stamped envelope, most dealers in replacement china will not answer. Q. What is the meaning of a moon screen for a fireplace? A. When fireplaces were in vogue for heating and cooking, a round hoop of iron or brass with sheets of mica or horn protected anyone before the fire from flames. Q. When I was young, we set the table and turned the plates upside down over the napkins and silver. Why? A. In the late 1800s and early 1900s, few houses had screens, so flies were more abundant in the home. Turning the plate over the silver and napkin kept them clean and uncontaminated until dinner. Q. Why is the sunflower so popular for china and glass decoration? A. Because of its symmetry, it's an easy flower to paint, cut into glass or press in a mold. It is still one of the most popular patterns for the collector. A sunflower pintray may fetch a price of over$750. Q. How is it possible to know what the pattern in cut glass is supposed to be? A. Dorothy Pierson, Dorothy Daniels, Albert C. Revi and George Fauster have written books on cut glass that will help you. Q. Our grandfather, age 86, asks for posset when he is going to bed. We would like to please him. Help! A. Posset is of warm milk laced with wine and sugar. Sometimes spice is added. It's supposed to aid sleep. Q. Was there ever a time when soapstone was used for stove tops? A. In the not-too-distant past, many wood- and coal-burning cook stoves had soapstone tops. The stone held the heat and the stoves were easier to clean. Q. Please give me the name of an author who has written on Shenandoah Pottery. A. J. H. Rice and John Baer wrote the book, "Shenandoah Pottery." It is the most definitive book available that takes in all the pottery-producing states in the Shenandoah Valley. Pottery of this