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POPULAR SCIENCE REVIEW. 
Such dwellings are now tenanted by the Kouaoui people of 
Doree (New Guinea) and by those of Masmapi, though perhaps 
the simplest form of lake-habitation now dwelt in is that erected 
by the Pilotis tribe, in the near-lying island of Rawak. 
The lake-habitations of Switzerland have been divided by 
Mr. Lubbock and other archaeologists into three classes : — 
“ Firstly, those in which all the instruments are made of stone 
and bone, and which may therefore be said to belong to 
the stone age — about fifty of these lake-villages have been de- 
scribed; secondly, those in which objects of bronze also occur 
— establishments of this class are even more numerous ; and, 
thirdly, those in which implements of iron have been dis- 
covered — only a very few of these are as yet known.” It must, 
however, be borne in mind that archaeologists are united in 
their opinion that the three ages of stone, bronze, and iron 
“ represent states of civilization rather than actual chrono- 
logical horizons.” 
Dr. KelleFs investigations have, perhaps, been the most 
constant ; and he has, from time to time, embodied the dis- 
coveries, as they have been made, in reports with which he has 
enriched the “ Transactions ” of the Archaeological Society of 
Zurich. Without, therefore, alluding farther to these dis- 
coveries which have been made known and commented upon 
throughout Europe, it may suffice to call attention to the last 
(5th) Report of the series. A convenient resume of this has 
just been circulated by M. Morlot. 
The lake-dwellings therein described are those in the Duchy 
of Parma, met with in accumulations of fresh- water mud 
near the present river margin. In this fluviatile material, 
Professor Strobe and Signor Pigorini of Parma had met with 
the sites of several dwellings, from which they had obtained 
fragments of wood and cinders, and the bones of animals, 
together with a curious assemblage of art-objects in bone, 
stone, and bronze ; in the latter material were axes, sickles, 
arrow-heads, sword-blades, hair-pins, a small comb, scissors, 
and an awl. The pottery was of coarse clay, mixed with sand, 
resembling in its character the rude kind still made by hand in 
the villages among the Apennines. The pots found had 
small handles, and were sometimes ornamented with stripes. 
Among the bone objects were combs, exhibiting a like orna- 
ment to those of bronze. A basket made of osier was also met 
with. The animal bones found belonged to wolf, wild-boar, 
roebuck, stag, dog, pig, horse, bull, goat, and sheep; bird 
bones were also met with. Remains of fruits also came to 
light from out the mud — which were so well preserved as to 
be easily referred to pears and plums. Flax-seeds were also 
found. On the site of a similar lake-dwelling at Peschiera, 
