THE OREGON NATURALIST. 
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Drawing of a fragment of a Conglomerate Ferru- 
ginous Geode, slightly enlarged, found at Lin- 
coln Park, on the beach. This Park is a public 
resort, on the New Jersey side of the Delaware 
River, several miles below Philadelphia, another 
Conglomerate specimen, about the size of a 
filbert nut, was also picked up, and upon 
being fractured, proved also to be geodic, and 
appeared to contain a portion of oxide of iron, 
A number of larger specimens 
The 
gently shelving, andl seems to be made up of 
in dust form. 
were scattered about the shore. beach 1s 
quartzose pebbles, and sand. A is the geodic 
cavity, while a. a. a. are depressions in it, 
B is the general ferruginous mass, holding 
together ordinary water worn 1 ebbles? (Gy... ( 
and much smaller similar ones, while D...... D 
is the broad edge of the immediate wall of the 
Geode. 
Wn. BRINGHURST M. 1D. 
Philada. Pa. 
The latest aspirant in the field of OQrnitho! 
The Avifauna, 
If future numbers areas goo] 
ogy, is published at Los 
Angeles, Cal. 
as the September: No. 1, Vol. 1, number its 
success 1s assured. 
TEMPERATURE OF PLANTS. 
During a quite severe access of heat at this 
place lately, it occured to me to make an exami- 
nation as to the temperature of the foliage of 
several plantsin my garden, I found, that 
while the heat of the direct rays of the sun 
pushed the thermometer away up, the stem, and 
leaves, of a Chenopodium, under the same 
circumstances, were quite cool, to the tactile 
corpuscles of my fingers, also a Convolvulus or 
Morning Glory, a Commelyna or one of the 
Spider-worts, some Grasses, and I believe some 
Zinnias, displayed the same state of things, 
The walls of an outhouse, a wooden fence, and 
bricks underfoot, were much heated, disagree- 
ably so, to the same tactiles. 
Wat. BRINGHURST M., D. 
Philada, Pa 
Drawings, natural size, 
Fig. I, an arrow point fabricated from a 
dirty white milky quartz, and fig, 2, an arrow 
point with loss of tip, made from milk y quartz, 
both were found in Gloucester County, New 
Jersey, in the neighborhood of Swedesboro. 
Wa. BrincHurRstT M, D. 
Philada. Pa. 
I would like to know if any other collector 
has examined Mourning Dove’s eggs later than 
I have this season. Aug. 20, one set of two, 
incub ition advanced. Aug. 21, one set, 
incubation begun, Aug. 22, a very flimsy 
nest, with two fresh eggs. The first two nests 
were placed about four feet up in fig-trees. The 
latter one in lemon tree, about eight fect up. 
The birds seemed to be very unsuspicious of 
the presence of human beings. 
J. Maurice Hatcu 
Escondido, Calif., 
