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HoF, Dr. a. C. 
Farberische Studien au Gefassbiindeln. Ein Beitrag zur Cbemie der 
Elektivf arbungen . 
lodo-Eosin as a Test for free Alkali in dried-up Plant Tissues. 
Hough, S. S. 
Eighteen volumes of " The Philosophical Transactions of the Royal 
Society of London, from their commencement, in 1665, to the year 
1800 ; Abridged, with Notes and Biographic Illustrations, by Charles 
Hutton, George Shaw, and Richard Pearson." 
Janet, Charles. 
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No. 21. Organes sensitifs de la mandibule de I'Abeille. 
No. 22. Sur I'existence d'un organe chordotonal et d'une 
vesicule pulsatile antennaires chez I'Abeille et sur la morphologic 
de la tete de cette espece. 
1911. F. 29. Constitution Morphologique de la Bouche de 
rinsecte. 
n.n. Sur I'Origine Phylogenetique de la division de I'Ortho- 
phyte en un Sporophyte et un Gametophyte chez les 
Cormophytes." 
Liste des Notes, 1-22. 
Johannesburg. 
The Geological Society of South Africa. 
Transactions, vol. xv., July to December, 1912, pp. 77-164. 
Proceedings, to accompany vol. xv. of the Transactions, July to 
December, 1912, pp. Ixxxii-xciv. 
The Chemical, Metallurgical, and Mining Society of South Africa. 
Journal, vol. xiii., Nos. 5, , ,8; Index, vol. xii., 1911-12; 
Contents, vol. xii. 
Union of South Africa. Union Observatory. 
Circular, Nos. 2, 3, 4, 5, 6, 7, 8, 9. 
Index of the Contents of the thirteen Circulars of the Transvaal 
Observatory. 
The Institute of Land Surveyors of the Transvaal. 
Journal, vol. iii., No. 4. 
Council of Education, Witwatersrand. 
The Trades School in the Transvaal,'' by W. J. Horne, 
A.M.I.C.E., Organizer for Technical Education in the Transvaal. 
