AvuGusT 10, 1899] 
report at the end of the first year) in any University at 
home or abroad, or in some other institution approved of by 
the Commissioners. The scholars are to devote themselves 
exclusively to study and research in some branch of science, 
the extension of which is important to the industries of the 
country. A limited number of the scholarships are renewed 
for a third year where it appears that the renewal is likely to 
result in work of scientific importance. 
Nominating institution Scholar 
1 | University of Glasgow | Robert John Tainsh Bell 
2 | University of St. Andrews __ James C. Irvine 
3 | Mason University College, Birm- | Henry Leonard Heathcote 
ingham % : 
4 | University College, Bristol Winifred Esther Walker 
5 | Yorkshire College, Leeds | Frederick William Skirrow 
6 | University College, Liverpool | Charles Glover Barkla 
7 | University College, London | Harriette Chick 
8 | University College, London Henry James Tomlinson 
9 | Owens College, Manchester. Frank Austin Lidbury 
10 | Durham College of Science, | William Campbell 
Newcastle-upon-Tyne _ 
11 | University College, Nottingham | Louis Lownds 
12 | University College of Wales, | James Travis Jenkins 
Aberystwyth 
13 | University College of North | Robert Duncombe Abell 
Wales, Bangor : 
14 | Queen's College, Belfast William Caldwell 
15 | McGill University William Brown McLean 
16 | University of Melbourne Bertram D. Steele 
The following scholarships granted in 1898 have been con- 
tinued for a second year on receipt of a satisfactory report of 
work done during the first year :— 
Nominating institution Scholar | Place of study 
1 University of Glasgow | James Frank | Owens College ; to proceed 
Bottomley | to University College, 
London 
2 University of Aber- | Alexander Find- | University of Leipzig 
deen 4 lay ; | 
3. Mason College, Birm- | A. H. Reginald | Botanical Institute, Leip- 
ingham Buller | zig $ to proceed to Uni- 
| _versity of Munich 
4 Yorkshire College, | Harry Thornton | University of Leipzig 
Leeds Calvert | 
5 University College, | Ernest Brown Central Technical College, 
Liverpool | South Kensington 
6 Owens College, Man- | James Henry | Owens College (permitted 
chester Smith | under spectal circum- 
| stances) 
7 Durham College of | Arthur William | University College, Lon- 
Science, Newcastle- Ashton don 
upon-Tyne 
8 University College, | Austin Henry | Cavendish Laboratory, 
| _ Nottingham Peake J Cambridge 
9 Royal College of | Robert L. Wills | Cavendish Laboratory, 
Science for Ireland Cambridge 
to Queen's College, Gal- | Hugh Ryan University of Berlin 
way 
1x University of Toronto | William Gabb | University of Leipzig 
Smeaton 
12 Dalhousie University, | Ebenezer Henry | Harvard University 
Halifax, Nova | Archibald 
Scotia 
The following scholarships granted in 1897 have been ex- 
ceptionally renewed for a third year :— 
Nominating institution Scholar Place of study, 
ai ap | 
1 | University of Glasgow | James Muir Engineering Laboratory, 
Cambridge 
2 | University of St. An- | Harry McDonald} Gatty Marine Laboratory, 
drews. Kyle | St. Andrews,  Labor- 
| atoire Arago, Banyuls- 
sur-mer ; Konigliche 
Biologische Anstalt, 
Heligoland 
3 | University College, | Charles Henry | Owens College, Man- 
Bristol Graham Sprank- chester 
ling 
4 | Yorkshire College, | Harold Albert | Cavendish Laboratory, 
Leeds Wilson Cambridge 
5 | University College of | Maria Dawson Botanical Laboratory, 
South Wales and Cambridge 
Monmouthshire 
6 | University of Mel- | Walter Rosenhain| Engineering Laboratory, 
bourn Cambridge 
NO. 1554, VOL. 60] 
NATURE 
T 
359 
IN connection with the article on the duties of provincial 
professors, which recently appeared in these columns, it is 
worthy of note that, according to the Hochschul-Nachrichten, 
22 per cent. of the professors in the Gerrnan universities are 
engaged in lecturing or laboratory supervision two to six hours 
a week, and 51 per cent. from seven to twelve hours. Of the 
associate professors 60 percent. are engaged from two to six 
hours per week, and of the privatdocents 82 per cent. Only 
4 per cent. of all privatdocents are engaged in lecturing or - 
laboratory supervision more than twelve hours a week. As 
Sczence remarks, the leisure of the German associate professors 
and docents explains in large measure the amount of research 
work accomplished in German universities. 
SCIENTIFIC SERIAL. 
American Journal of Mathematics, vol. xxi, No. 3, July. 
—This number opens with a long memoir (64 pp.) by Dr. 
L. E. Dickson, entitled ‘*‘ Determination of the Structure of 
all Linear Homogeneous Groups ina Galois Field which are 
defined by a Quadratic Invariant.” This is an attempt at a 
complete determination of this important type of groups. 
Dr. Dickson’s work is familiar to the students of ‘‘ groups” 
in this country by his papers in the Quarterly Journal (on the 
first hypoabelian group generalised, 1898), in the American 
Bulletin (the structure of the hypoabelian groups, July 1898, 
also of the Bud/etzn for February and May 1898), and in the 
Proc. of the Lond. Math. Soc. (the structure of certain linear 
groups with quadratic invariants, vol. xxx. pp. 70-98). Two 
new systems of simple groups are obtained in the present 
memoir, and thereby some results in the earlier papers are 
correlated and completed. (References are freely given to 
results obtained by other workers in this field.)—Upon the 
ruled surfaces generated by the plane movements whose cen- 
trodes are congruent conics tangent at homologous points, by 
Dr. E. M. Blake. The movements considered are thus defined, 
Upon a plane e@’ containing a conic C’ moves a_ coincident 
plane a, containing a conic C congruent to C’, in such a manner 
that C and C’ are always tangent at homologous points, z.e. 
C and C’ are the centrodes of the movement. The locus of 
a point rigidly attached to a is a curve of the fourth order 
when C and C’ are central conics, and of the third order 
when they are parabolas. The locus is in a plane parallel to 
a’, and the same distance from it that the generating point is 
from a. The locus of a straight line carried by a and making 
an angle with it, is a quartic scroll when the centrodes are 
central conics, and a cubic scroll when they are parabolas. 
The object of the paper is to describe the forms of these 
scrolls, and the character and situation of their nodal lines and 
pinch-points. The results are to be regarded (1) as furnishing 
a method of mechanically generating certain cubic and quartic 
scrolls, and (2) as exhibiting the totality of line-loci of the 
movements considered. These results are believed, by the 
author, to be new.—The remaining two papers are by J. C. 
Glashan, and their nature is indicated by their titles, viz. 
** Quinquisection of the Cyclotomic Equation” (read, in abstract, 
at the British Association meeting of August 29, 1897, ¢f 
Prof. Cayley’s paper on the subject in vol. xii. of the Z. Math, 
Soc. Proc.), and on the » fold section of the cyclotomic equation 
in the case of 7 prime. (Useful references are given to pre- 
vious memoirs on the subject.)—Accompanying this number is 
an index to volumes xi.-xx.—The editorial staff is announced 
to consist of Prof. Newcomb, with the co-operation of A. 
Cohen, Frank Morley, Charlotte A. Scott, and other mathe- 
maticians.—This is strong enough for any work that may be 
placed before it. 
SOCIETIES AND ACADEMIES. 
LONDON. 
Royal Society, June 15.—‘‘On the Waters of the Salt 
Lake of Urmi.” By R. T. Giinther, M.A., and J. J. Manley, 
Daubeny Curator, Magdalen College. Communicated by Sir 
John Murray, F.R.S. 
This paper contains an account of a physical and chemical 
investigation of the waters of the great salt lake of Urmi in 
Azerbaijan, North-west Persia. Samples of the water were 
