Vital medullary centres, 3 Vomiting, 140, 152 impending, 39, 141 W War, anti-shock, measures in, 11 lessons of, 61, 151 Warming anæsthetic vapours, 62, 90, 101 Wedge for opening clenched jaws, 25 Withdrawal of anæsthetic, for stridor, 26 for breath holding and struggling, 34 for syncope, 145 FOOTNOTES: [1] This can be done to a very limited extent indeed if the ordinary valves here described are used. _See_ page 68. [2] A safeguard provided on some machines is a side lead from the oxygen supply direct to the facepiece whereby pure oxygen can be given if required. [3] The amount of oxygen in a cylinder is designated in terms of cubic feet. A cylinder which would hold 100 gallons of N_{2}O, will contain 30 cubic feet of oxygen. [4] In the figure the Clover is shown with gas valves and 2-gallon bag, arranged for “gas and ether.” [5] Trans. xvii. Internat. Med. Cong. Sub-sect. (vii.) Part i. [6] _Journal_ Amer. Med. Assoc., Sept. 1913. [7] Trans. xvii., Internat. Med. Cong. Sub-sec. (vii.), Part i. [8] Trans. xvii., Internat. Med. Cong., Sub-sec. (vii.), Part ii. [9] Trans. xvii., Internat. Med. Cong., Sub-sec. (vii.), Part I. [10] The student should be careful to be sure that the bulb is attached to the _inlet pipe_: if by accident it be slipped on to the outlet pipe, the first compression of the bulb will eject a stream of liquid chloroform from the instrument. [11] The author described this method in a paper read before the Scottish Branch of the British Dental Association, and afterwards published in the _Journal_ of the Association under the title “The Edinburgh System of Dental Anæsthesia.” To the use of this term Dr J. H. Gibbs, of Edinburgh, took strong exception in a letter to the Editor of the _Journal_. The author has and had no desire to convey the impression that this system was universally used in Edinburgh, but simply that it is the method taught by Dr Guy, Dean of the School, to the students in the Extraction Room. Transcriber’s Notes: 1. Obvious printers’, punctuation and spelling errors have been corrected silently. 2. Where hyphenation is in doubt, it has been retained as in the original. 3. Some hyphenated and non-hyphenated versions of the same words have been retained as in the original. 4. Superscripts are represented using the caret character, e.g. D^r. or X^{xx}. 5. Italics are shown as _xxx_. 6. Bold print is shown as =xxx=.