In the July number Mr. Blair, referring to my note in April on glazing, confirms the opinion which I expressed in that note. I think it desirable, after one winter's experience. I found, however, that towards spring spaces between the ends of the glass appeared, some as large as a sixteenth of an inch, or possibly larger. These did not exist when the glass was laid in the fall. I found the same thing to occur in a house in which the glass was slipped into grooves in the sides of the rafters. Does the glass shrink ? Who can give the reason and a remedy ?