NOS] ( 88 ) 



Natural Order. In Botany Linnaeus divided known plants into 

 two divisions, one of which he divided into twenty-three 

 classes, or in all twenty-four classes ; those classes he sub- 

 divided into orders, or " natural " orders, which serve as 

 the practical working bases in particularizing trees ; instance, 

 an oak natural order, " Cupuliferge," or " Corylacese " ; 

 genera, " Quercus " ; species, " Robur." Since his time 

 changes in classification have taken place. The English 

 oak, Q. Robur, embraced a variety which has been advanced 

 to a species, the two now stand Q. pedunculata and Q. sessili- 

 flora. See " Genera " and " Species." 



Nave. (1) The block in the centre of a wheel, from which the 

 spokes radiate and through which the axle passes. Called 

 also hub or hole and stock. (2) The middle of the church 

 (excluding the aisles). 



Nave Mortising and Boring Machines. Machines specially con- 

 structed for mortising the naves of wheels ready to receive 

 the spokes. 



New Style. The reformed or Gregorian Calendar, adopted in 

 England in 1753, when eleven days were dropped or left out. 



Newel. A post at the end of a flight of stairs, to carry the hand- 

 rail or for the steps to work round. 



Nib, Lip or Tongue. A term applied to the upper back part of 

 an earthenware roof -tile ; it is a projection or lip, a feature 

 in " hanging tiles," by which the tile is hung on the " tile- 

 lath." See " Tile " and " Pantile," 



Nick and Notch. To cut in notches or make indentations on 

 wood, especially in the instance of " tally-sticks " (which 

 see). "Notch" is another term for "trench" cut in the 

 " wall-strings " of staircases to receive and hold the ends 

 of the wooden steps hence a " string-board " may variantly 

 be called a " notch-board." 



Nogs. Wooden bricks, introduced here and there into walls, 

 for the purpose of fastening internal fittings, window frames, 

 etc. 



Nominal Horse-Power. A term used to denote the approximate 

 horse-power of an engine. As the name does not give any 

 exact rating it has been generally discarded. The actual 

 power of an engine is generally expected to be 3 times its 

 nominal power. See " Brake Horse- Power." 



Nominal Measure. The full measure of a board before it is 

 planed or dressed. 



North Carolina Pine. See " Pitch Pine." 

 Nosed. -Rounded on one edge. 



