1918.] The N.Zv Journal of Science and Technology. 191 
species in another character. As the author remarks, it is evident that 
further study of more abundant material is necessary for the proper classifi¬ 
cation of the “ forms 55 of Nebalia. C. C. 
The Mount Hector Track, by H. E. Girdlestone. Extract from Report of 
the Lands and Survey Department, 1914-15, 6 pp., map and illustrations, 
Wellington, 1916. 
This paper is in its original form entitled “ A Trip across the Tararua 
Ranges from Grey town to Otaki,” and this title indicates the subject- 
matter, which is a chatty account of an actual journey across the range. 
The route is carefully described, and the paper ought to prove very useful 
to those who wish to make the traverse. It is accompanied by a folded 
map, 16 in. by 12 in. 
New Maps. 
South Island, N.Z.; North Island, N.Z. [10 miles = 1 in.]. Lands and 
Survey Department, Wellington, not dated. [Price, 22s. 6d. each.] 
These maps show land-district and county boundaries, and the counties 
are differently coloured. Relief is shown by means of hachures. The 
maps are drawn by W. Deverell. 
Plan of Tongariro National Park [2 miles == 1 in.]. Lands and Survey 
Department, Wellington, 1917; price, 2s. 6d. 
Enlarged maps of Tongariro and vicinity (scale, J mile — 1 in.), the 
summit of Ruapehu, and the summit of Ngauruhoe are on the back. 
C. A. C. 
SPECIFICATIONS OF PATENTS. 
Metallurgical and Mineral Industries. 
Below are given short titles of recent patents which may possibly have 
a bearing on New Zealand industries, and may be otherwise overlooked by 
our readers. The full specifications may be consulted at the Patent Office, 
Wellington. Printed copies of British specifications may be obtained from 
the Patent Office Sales Branch, 23 Southampton Buildings, Chancery Lane, 
London S.W.; price, 6d. per copy, plus postage. Printed copies of Austra¬ 
lian specifications may be obtained from the Commissioner of Patents, 
Melbourne; price, Is., including postage. The specifications of inventions 
for which patents have been applied in New Zealand are, unfortunately, not 
printed, but may be seen at the Patent Office, Wellington. Abridgments 
are printed in the Patent Office Journal , published fortnightly. Manuscript 
copies of all specifications are obtainable from the Patent Office on payment 
of the cost of copying, which may be ascertained on application. 
Refining of iron. Rollason. U.K. 109178. 
Method of autogenous welding or fusing of nickel and alloys containing a high per¬ 
centage of nickel. Samesreuther, and the firm Autogenwerk Sirius. U.K. 24646, 
1914.- 
Method of soldering, and apparatus therefor. Smith and Watson. U.K. 108623. 
Smelting-furnaces. Lundberg. U.K. 108498. 
Furnaces for refining metals. Kermode and Miller. U.K. 108782. 
Electrodes as used for welding purposes. Irvine. U.K. 108789. 
Means for the heat treatment of metals. P. Winn and Wilkes. U.K. 108826. 
Apparatus for treating ores and other materials. Hovland. U.K. 100681 and 105571. 
