190 Reports and Proceedings—Zoological Society. 
the same rotational symmetry round the axis, and each row those 
which agree in the other symmetrical characters of the axis.—A new 
model of crystal-refractometer, by Dr. G. F. Herbert Smith. This 
instrument is identical in principle with that previously described, and 
is intended for use with large mineral specimens and mounted gem- 
stones. No part extends above the level of the plate holding the 
dense-glass hemisphere. Further, the optical combination has double 
the focal length of the earlier form and provides consequently greater 
refinement. — Isomorphism as illustrated by certain varieties of 
magnetite, by Professor B. J. Harrington. Analyses are given of 
specimens of magnetite from St. Joseph du Lac, Canada, and trom 
Magnet Cove, Arkansas, both showing the unusual combination of 
octahedron and trapezohedron {311}. The Canadian specimen con- 
tained about 5 per cent. of TiO,, 8 per cent. of MnO, and 38 per cent. 
of MgO; and the specimen from Arkansas about 10 per cent. of 
Al, Oz, 2 per cent. of Ti O,, 2 per cent. of MnO, and 9 per cent. of 
Mg O.—Mr. Fleischmann exhibited a collection of zeolites from Japan, 
‘Dr. Evans an objective giving a flat field with convergent light, and 
Professor Miers a goniometer to be used for the measurement of the 
refractive indices of cooling solutions, for which purpose it is provided 
with means for maintaining a constant temperature for any desired 
period. 
VI.—Pat#onToGRAPHICAL Socrery. 
The sixtieth Annual Meeting of the Palseontographical Society was 
held at the apartments of the Geological Society, Burlington House, 
on Marck 16th, Dr. Henry Woodward, F.R.S., President, in the 
chair. The report of the Council congratulated the Society on its 
continued prosperity, and the value and variety of the Monographs 
which it still received for publication. The funds had been augmented 
by a special sale of back stock to members, but the normal income 
Showed a gradual decline owing to the difficulty of obtaining new 
personal subscribers to replace those lost by death. The Carnegie 
Trust for the Universities of Scotland paid for the production of 
five plates of Old Red Sandstone Fishes illustrating Dr. Traquair’s 
Monograph issued in 1906. The Rev. J. F. Blake, Mr. Thomas 
‘Leighton, and Miss Caroline Birley were among the members deceased 
since the last annual meeting. Dr. Henry Woodward, Dr. G. J. 
Hinde, and Dr. A. 8. Woodward were re-elected President, Treasurer, 
and Secretary respectively. Messrs. J. Hopkinson, W. D. Lang, 
H. Woods, and G. W. Young were elected new members of Council. 
VII.—Zoonoeicat Socrery. 
At the meeting of the Zoological Society on March 19th, 1907, 
Mr. H. F. Standing, M.Sec., exhibited and described a large series of 
remains of comparatively gigantic extinct lemurs, which he had 
discovered in a marsh in Madagascar. He arrived at the following 
general conclusions as to the relationships of these animals and the 
Prosimiz in general :— 
