macnab.] Botanical Necrology for 1889 . 477 
Low, Franz, und Paul Low : Jahresbericht iiber Hemiptera fur 1884. 
Ibid. 1884. 
— — — : Jahresbericht iiber Hemiptera und Mallophaga 
fur 1885. Ibid. 1885 . 
Also many smaller contributions in Wiener Landwirthschaftliche Zeitung, 1886, 
1887, 1888,1883; in Praktische Landwirtli (Wien), 1886, 1887, 1888; and in 
Botanische Centralblatt and Wiener Entomologische Zeitung. 
WILLIAM B AMS AY MACKAB. Born at Edinburgh, November, 
1844. Died at Dublin, December, 1889. Educated at the 
Edinburgh Academy, and Universities of Edinburgh and Berlin. 
M.D. 1866. Assistant Physician Crichton Royal Institution, 
Dumfries, 1867-1870. Professor of Natural History in the 
Royal Agricultural College, Cirencester, 1870-1872. Professor 
of Botany, Royal College of Science, Dublin, 1872-1889. 
Scientific Superintendent, Glasnevin Botanic Garden, 1880-89. 
Swiney’s Lecturer on Geology, 1887-89 Biographical notice 
in Nature, 1889, and in Journal of Botany, 1890. Published : — 
On the parts involved in the process of Defoliation. Trans. Bot. Soc. 
Edin. VIII. 
On the development of Leaves. Ibid. 
On the Selaginellas cultivated in the Royal Botanic Garden, Edinburgh. 
Ibid. IX. 
On Diatomaceae from Iceland. Ibid. 
On a peculiarity in the structure of the stem in Hedera Helix. Ibid. 
On the British species of Delphinium. Ibid. 
On the staining of Microscopical Preparations. Ibid. X. 
On the structure of a Lignite, from the Old Red Sandstone. Ibid. 
Histological Notes, No. 1. 1. On the structure of the Adventitious Roots of 
the Portugal Laurel. 2. On Intercellular Substance and Cuticle. Ibid. 
Histological Notes, No. II. 3. On a modification of Schultz’s Process. 
4. On the Fibre in the Stem of Muntingia. 5. On the Adventitious Roots 
of the Cherry Laurel. 6. On the Stem of Cynara Scolymus. 7. On the 
Periderm of Acer campestre. 8. On the Thickened Cells in the Leaves of 
Pines. Ibid. XI ; Journal of Botany, new series, Vol. I. 
On the Flowering of Eranthis and Leucojiun. Trans. Bot. Soc. Edin. X. 
Experiments on the Transpiration of Watery Fluid by Leaves. 
Ibid. XI. 
On the Organization of Equisetums and Oalamites. Trans. Bot. Soc. 
Edin. XI ; Journ. of Botany, new series, Vol. I. 
On the Tendrils of Ampelopsis Veitchii. Trans. Bot. Soc. Edin. XI. 
On the Velocity of Sap. Ibid. 
On the synonymy of certain species of A lies. Ibid. XII. 
On the simple structure of Compound Leaves. Monthly Mic. Journ. 
Vol. I. 
The mode of examining the Microscopical Structure of Plants. Ibid. II. 
