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tenant of the Active during the Zulu war of 1878-9, 
and was promoted Captain in “1896. He afterwards 
became Assistant-Director of Torpedoes (1902), Con- 
troller of the Navy (1905), and Chief of the War Staff 
at the Admiralty (1913-14). In science Sir Henry Jack- 
son’s work refers chiefly to electrical physics. In the 
‘nineties of last century he was among the first to 
engage in the practical application of electric waves 
transmission ; in other words, wireless telegraphy. He 
early made the acquaintance of Mr. Marconi, the two 
collaborating in important researches. In 1895 Sir 
Henry began systematic experiments and trials under 
sea-going conditions (inclusive of the use of balloons 
and kites), with the view of utilising the effect of 
Hertzian oscillations for naval signalling purposes. 
The results were embodied in a paper read before 
the Royal Society, entitled “On Some Phenomena 
Affecting the Transmission of Electric Waves over the 
Surface of the Sea and Earth.” From 1go05-6 he 
was A.D.C. to King Edward VII.; in 1906 he was 
made K.C.V.O., and, in 1910, K.C.B. The Royal 
Society elected him into its fellowship in 1go1. A 
member of the Institution of Electrical Engineers, 
and an associate of the Institution of Naval Archi- 
tects, Sir Henry also serves on the general board of 
the National Physical Laboratory, and has consistently 
promoted its interests in official quarters. It may be 
of interest to give the names of those fellows on the 
Royal Society’s current list who either are naval men 
or are engaged on Admiralty service. They comprise 
Admiral Sir A. M. Field, late Hydrographer; Capt. 
T. H. Tizard, late Assistant-Hydrographer; Sir 
Henry J. Oram, Engineer Vice-Admiral, Engineer-in- 
Chief of the Fleet; Capt. E. W. Creak, C.B.; Sir 
Philip Watts, late Director of Naval Construction ; 
Mr. R. E. Froude, Superintendent of the Admiralty 
Experimental Works at Gosport; Sir J. A. Ewing, 
Director of Naval Education; Sir John Thornycroft; 
and the Hon. Sir Charles Parsons. 
We learn from the Scientific American that Mr. 
Walter G. Davis, director of the Argentine Meteoro- 
logical Service, recently retired on a pension, and was 
succeeded by Senor Martin Gil, described in the 
Argentine newspapers as a wealthy amateur ‘meteoro- 
logist and astronomer, much interested in long-range 
weather prediction. 
A War Exhibitions has been organised to assist 
the funds of the Belgian Red Cross Anglo-Belgian 
Committee, whose patroness is the Queen of the 
Belgians. The exhibition is designed to present an 
idea of the extent to which science and industry are 
being utilised in every branch of the present gigantic 
struggle. The exhibition comprises seven sections, 
which include, with others, armament and ammuni- 
tion in the making, Red Cross work, science and 
industry applied to war, food and hygiene, and a 
maritime and aerial section. The exhibition will be 
held at Prince’s Skating Club, Knightsbridge, London, 
from June to October. 
DuriNnG a thunderstorm near Gibraltar on May 25 
a cloud is said to have belched forth millions of small 
frogs which had apparently been drawn up from a 
NO. 2379, VOL. 95| 
NATURE 

[JUNE 3, 1915 
lake twenty miles away. Such ‘‘showers of frogs,” 
when satisfactorily authenticated, are to be ranked 
along with showers of sticklebacks, herring, and even 
larger fishes. Some of these showers are well vouched 
for, and admit of physical interpretation. In an eddy 
of a whirlwind there is sometimes draught strong 
enough to suck up dust and leaves and sheaves, or 
water and fishes and frogs. The whirling column is 
borne on by the wind and may transport its burden for 
many miles until the rotational energy is expended 
and the little tornado is over. It must be carefully 
noted, however, that the sudden appearance of multi- 
tudes of small frogs often implies nothing more than 
the usual migration of the young frogs from their 
birthplace in the pond to their summer quarters in 
the fields. Similarly, as Gosse pointed out long ago, 
alleged ‘‘snail showers’’ are apt to disappear under 
scrutiny, and ‘‘a torrent of periwinkles’”’ turns out 
to be a migration of Helix virgata or the like. In 
his ‘‘Romance of Natural History’? Gosse inquired 
in a fair-minded way into the various kinds of animal 
‘*Showers,’’? and came to the conclusion that some of 
the records were worthy of credence as regards frogs, 
toads, and fishes. It is probable enough, then, that 
the Gibraltar shower was genuine. 
A REMARKABLE discovery of flint implements has 
been made recently at Highfield, Southampton, and 
a large selection of them is now displayed in two new 
cases in the prehistoric section of the County His- 
torical and Antiquarian Museum at Tudor House. 
The spot where they were found is apparently the 
site of the workshop or cache of a Palaeolithic master- 
craftsman in flint, and great numbers of implements 
in various stages of fashioning were brought to light 
on a limited area. The series shown covers the whole 
technique of manufacture, from the roughly-shaped- 
out slabs of table flint to beautifully chipped and com- 
pleted implements, with their edges still unabraded. 
It includes blanks or shaped forms of flint cut with 
astonishing precision, portions of implements broken 
in process of making, chips, etc. Some of the smaller 
implements vie in beauty of workmanship with the 
fine products of Neolithic culture, and are also of 
shapes generally associated with the later Stone Age, 
though their gravel patina is indisputable proof that 
they came from the river drift, and so are of Palzo- 
lithic origin. Series of both large and small imple- 
ments, the latter including various forms of scrapers, 
arrow-points, etc., are shown in their different stages 
of making, so that the -processes of manufacture 
become clear to the student. It is worthy of recording 
that the surface soil of the site yielded some interesting 
Neolithic implements, which are also shown. 
STONEHENGE, the most remarkable of our national 
prehistoric monuments, is included in the Amesbury 
Abbey estate, Wiltshire, which is to be sold by 
auction in September. Much information about this 
notable structure and its significance will be found 
in Lady Antrobus’s ‘*‘ Sentimental and Practical Guide 
to Amesbury and Stonehenge” and Sir Norman 
Lockyer’s ‘“‘Stonehenge and other British Stone 
Monuments Astronomically Considered.”” The first 
British author who is considered to make unmistak- 
