Cited by De B. Birch, 'The Constitution and Relations of Bone Lamellæ, Lacunæ, and Canaliculi, and some Effects of Trypsin Digestion on Bone', Journal of Physiology 2 (5-6) (1880), pp. 360-446.
Description:

Figs A-C in text:

'In order that the view as to the constitution of the lamella maintained here may be precisely stated, there is a diagram in PI. XIII., Fig. A, which shews two superimposed lamellae, each consisting of one set of fibres, the fibres in each set being represented parallel to and distinct from each other, their occasional junctions being omitted for clearness.

The two sets of fibres cross each other in direction at an angle of about 60°. In A the dotted lines B' and C' represent two directions of section that will give different appearances when the cut surfaces are viewed; these are represented respectively in B and C (P1. xiii.), B corresponding to the direction of section B', whilst C corresponds to the direction C'. In the last two diagrams a greater number of lameile are represented than at A.

From this it will be seen that when the section follows the course of one set of fibres alternating series of longitudinally and somewhat transversely cut fibres are seen (C). If however the section follows neither, but cuts both obliquely as in section B', the appearance on the cut surface will be that represented in diagram B. Such a view being met with even in Haversian systems which shew the other sets.' (366-367)

 

'A covered water bath was employed for carrying on the process; this was provided with a perforated tray, upon which rested covered metal boxes sufficient each for the accommodation of a slide or watchglass (Pl. XIII.). The water stood in the bath above the tray to such a height as not to set the boxes afloat. The slide with an excavated cell, or a watch-glass, having in it a pool of the digesting fluid, was placed on the supports in the box which contained a little water. The whole being placed on the tray with a tlhermometer, the coverings were put on, and a temperature between 100° 105° F. maintained. ' (371)