xvi. ABSTRACT OF PROCEEDINGS. 
Sydney. Both these instruments were invented by Professor 
Martens, of Charlottenberg. In one known as the Martens’ mirror 
apparatus it is possible to measure deformations as small as 
1-250,000ths in. with certainty. The other instrument is a roller 
extensometer, and measures 1-2500ths in. 
H. C. Russet, B.A., 0.M.G., F.R.S., exhibited a series of records 
by a new Thermograph. 
The following donations were laid upon the table and acknow- 
ledged :— 
TRANSACTIONS, JOURNALS, REPORTS, ec. 
(The Names of the Donors are in Italics.) 
Sypney—Department of Mines. Records of the Geological picid 
of N.S. Wales, Vol. v., Part ii., 1897. he Department 
— peg rai of .W. Minutes of Proceed 
ings, Vol. 1 The Association 
Government P. atutes of New South hl 
(Public eet Private) ol during the Session of 189) 
cernment Printer 
sa riot Statistician. Statistical Register pet 1895 a 
pre years (Bound copy); 1896, Part ii. ; and Pacts 
i The We 
ite x. Vib, © ii. “iy and Progre 
of N. 8. Wales, 1895-6, Vol. 1. overnment Statistician 
Institution of Surveyors, N. S. Wales. The Surveyor, Vol. 
1x., No. 12, 1896; Vol. x., Nos. 1-7, 1897. The Institution 
Linnean Society of New se bao Wales. eer aha ol. 
xx1., Part iii., No. iv., No. 84, 1896. Abstract 
of Proceedings, March 3 oy April 28, tas a. June 30, 
. - . The Society 
July 
New South Wales Medical Board. Register of Medical 
97. The Board 
Observatory. Results of Rain, River, and Evaporation 
ani made in New South Wales during = 
Russell, B.A., C.M.G., F.B.S., Bs vernment 
yatta The scabandut : datrommene 
— ‘Geographical oe of Australasia. panty a 
» Nos. e Society 
University of Sieher Calendar for — year 1897. a nascar 
Service Institution of pen uth Wales. Jou 
and Proceedings, Vol. v1., 1 : Vol. VIII., snag The “nation 
seit oe Government Gaze es , Vol ae Nos. 
d Index 1896; Vol. x hank - 14, 897. ger ” Secretary 
Toxto—Imperial University of a Touma af the College 
f Science, Vol. rx., Part it; Vo l. x The University 
Wasuincton—Navy etree Re “ oo hs Surgeon- 
Gen U.S. Na: i The Department 
avy 1 
U. . Bop 3 partys gee Report (16th) Part i., ager 
Wasssxoro x Z.—Polynesian Society. Journal, Vol. v., No. 
1896; Vol. vr, Nos. 1, 2, 1897. The Society 
