A disadvantage of the slotted core is, however, that it usually necessitates the lamination of the pole-pieces.
The axis and perforation are at right angles to the plane of lamination.
The lamination of a glacier is a peculiarly interesting case of cleavage.
It was long before I cleared my mind of doubt regarding the origin of the lamination.
I found also fine masses of mica imbedded in quartz, edge upwards, and so compact that its lamination was not perceptible.
Fig. 45 represents a crumpled portion of the ice with the lines of lamination passing through the strata.
The lamination was as perfect as that of slate, and quite defeated him in his effort to obtain a granular powder.
Planes of bedding are generally more strongly marked than planes of lamination.