24 
termination, as some earlier naturalists have 
supposed. G.C. Whipple and Horatio N. Par- 
ker present ‘A Note on the Vertical Distribu- 
tion of Mallomonas.’ While the reasons for the 
peculiar distribution are not wholly apparent, it 
apparently depends on light and temperature, 
the organism preferring to live where the light 
is strong, the temperature low and the water 
quiet. In an article on ‘The Colors of North- 
ern Monocotyledongus Flowers’ John H. 
Lovell considers that the primitive color of the 
perianth was green, that physiological condi- 
tions have often played an important part in 
determining the coloration of the petals, while 
insects have contributed to the fixation of such 
characters when once acquired. William L. 
Tower records the curious ‘Loss of the Hcto- 
derm of Hydra Viridis in the Light of a Pro- 
jection Microscope,’ this loss occurring almost 
completely in from one to eleven minutes. 
The diagrams illustrating this paper have been 
transposed. The editor makes the welcome 
announcement of the forthcoming publication 
in the Naturalist of a series of synoptical tables 
for the determination of American inverte- 
brates. 
Bird Lore for June commences with an all-too- 
brief note by Frank M. Chapman on ‘ Gannets 
on Bonaventure,’ accompanied by a full-page 
plate showing the nesting gannets on one of the 
ledges. Florence A. Merriam concludes her 
article on ‘Clark’s Crows and Oregon Jays on 
Mount Hood,’ and Mary F. Day gives some ex- 
cellent observations on the Chimney Swift un- 
der the caption ‘Home-Life in a Chimney.’ 
William L. Baily shows ‘Three Cobb’s Island 
Pictures,’ with notes thereon. Ella Gilbert Ives 
writes of ‘The Cardinal at the Hub,’ and 
Thos. §. Roberts has an illustrated ‘ Catbird 
Study.’ Olive Thorne Miller discusses ‘The 
Ethics of Caging Birds,’ deciding that this may 
be done, if properly done. Fred. H. Kennard 
tells of the birds of ‘A May Morning,’ and 
Mildred A. Johnson of those seen on ‘ A Febru- 
ary Walk.’ If one might venture a criticism 
on Bird Lere it would be to the effect that the 
‘young observers’ seem to be getting more 
than their fair share of space. 
Terrestrial Magnetism and Atmospheric Electric- 
SCIENCE. 
[N. S. Von. X. No. 236. 
ity for June. As already announced in ScIENCE, 
this journal is now being issued from the Johns . 
Hopkins University press, Dr. Bauer remaining 
as editor-in-chief. In view of the addition of 
atmospheric electricity to the scope of the jour- 
nal an appropriation has been made to it from 
the Hodgkins fund of the Smithsonian Insti- 
tution. The contents of the number before us 
are as follows: Portrait of Charles A. Schott, 
Frontispiece; ‘The Beginnings of Magnetic 
Observations,’ G. Hellmann; ‘Carte Magné- 
tique de la Sicile,’ L. Palazzo ; ‘The Magnetic 
Work of the United States Coast and Geodetic 
Survey,’ L. A. Bauer ; Uber einige Probleme 
des Erdmagnetismus und die Nothwendigkeit 
einer Internationalen Organisation,’ M. Eschen- 
hagen ; ‘The Secondary Magnetic Field of the 
Earth,’ A. W. Ricker ; ‘Remarks upon Profes- 
sor Ricker’s Paper and Wilde’s Magnetarium,’ 
L. A. Bauer ; ‘ Biographical Sketch and Por- 
trait of Dr. John Locke,’ L. A. Bauer; ‘Mean 
Values of Magnetic Elements at Observatories,’ 
C. Chree; Notes, ‘Biographical Sketch of 
Charles A. Schott.’ Activity in magnetic 
work. 
SOCIETIES AND ACADEMIES. 
GEOLOGICAL SOCIETY OF WASHINGTON. 
At the meeting of this Society, held on May 
10, 1899, three papers were read, of which ab- 
stracts follow : 
Mr. S. F. Emmons read a paper entitled 
‘ Plutonic Plugs and Subtuberant Mountains,’ new 
terms introduced by Professor I. C. Russell in 
two articles in Volume IV. of the Journal of 
Geology (1896), to designate hitherto unob- 
served geological phenomena, the one being a 
new form of igneous intrusion distinct from 
laccoliths, the other a new type of mountains. 
The latter, to which his second article is de- 
voted, are dome-shaped mountain uplifts with 
granitic cores, which he considers to have re- 
sulted from the vertical upthrust exercised by 
the intrusion of a larger plutonic plug (or 
tuber) beneath their center, and are called by 
him ‘subtuberant mountains.’ The idea of 
vertical upthrust had already been advanced 
by Dutton in his article on Mt. Taylor, N. M., 
in which he stated that all the mountain up- 
lifts between the Great Plains and the Sierra 
