[40] “Journal of the Royal Microscopical Society,” 2nd Series, Vol. iv., p. 542.
[41] Mr. J. F. Smith, “On the Structure of the Valve of Pleurosigma Pellucida,” “Quekett Club Trans.”
[42] “Quarterly Journal of Microscopical Science,” New Series, Vol. viii., 1878.
[43] It is quite possible also for the student to make his own microscope stand. Mr. Field in the “English Mechanic,” pp. 171 et seq., 1897, furnishes numerous working drawings for the construction of a high-class stand, together with patterns for the metal work.
[44] “Modern Microscopy,” by Martin J. Cole.
[45] With regard to the use of absolute alcohol, this re-agent requires to be used with caution; all minute details are lost, and it causes irregular shrinking of the finer tissues, while fibrous tissue is brought into undue prominence at the expense of the cellular elements. Consequently in certain biological laboratories the method of hardening in alcohol has been abandoned in favour of other re-agents.
[46] “Journal of Anatomy and Physiology,” XX. 1881, p. 349.
[47] “Journal of the Quekett Club,” July, 1893, and March, 1895.
[48] Mr. John Hood, 50, Dallfield Walk, Dundee, offers a weekly supply of infusorial life for a small annual subscription, or a single tube by post at the trifling cost of one shilling.
[49] Professor Marshall Ward, F.R.S., “Address to the Botanical Section of the British Association, 1897.”