1876.] Zoölogy. 237 
Pfeffer, Studies respecting Symmetry and Specific Causes of Growth. 
(An examination of the influence of surroundings upon the growth of a 
liverwort.) 3. J. Sachs, On the Influence of the Temperature of the Air 
and the Effect of Daylight on the Periodical Changes in the Rate of 
Growth of Internodes in Length. (See abstract in Sachs’ Text-Book, page 
735 et seg. In the memoir, Professor Sachs has given a very full résumé 
of the literature of the subject.) 4. J. Sachs, On Negative Geotropism. 
(Observations respecting the curving upwards of shoots from a stem 
placed horizontally.) 5. J. Sachs, On the Deflection of Roots from their 
Normal Direction of Growth by Contact with Moist Surfaces. (See 
abstract in Sachs’ Text-Book, page 764.) 6. Hugo de Vries, On some 
Causes of the Direction taken by Parts or Plants which possess Bilat- 
eral Symmetry. (The effects of gravitation, light, defoliation, etc., are 
examined, The views of Frank are contested. See Text-Book, page 
705.) 7. J. Sachs, The Plant and the Eye as Different Tests for Light. 
(Sachs had early insisted upon a distinction between objective intensity 
of light and its brightness to the eye. Prillieux in a paper on the sub- 
ject is thought to have overlooked these distinctions, as well as that be- 
tween refrangibility (objective) and color (subjective). In the present 
memoir Professor Sachs reviews the literature of the subject, defends 
his former position, and further explains the relation between the inten- 
sity of light and the activity of assimilation.) 
ZOOLOGY. 
Tae Crosspitt BREEDING At Riverpatr, N. Y.— This bird 
(Loxia curvirostra var. Americana) made its appearance here last au- 
tumn, November 3d. Small flocks were occasionally seen all winter, 
and through March and April, feeding on seeds of cones of the Norway 
spruce and larch. On April 22d I noticed a pair building near the top 
of a red cedar, about eighteen feet from the ground. The nest, April 
30th, contained three eggs, and was composed of strips of cedar bark, dried 
grass, and stems of the Norway spruce, and was lined with horse-hair, 
feathers, dried grass, and fibrous roots. The eggs were about the size of 
those of Junco hyemalis, in color very light blue, slightly sprinkled and 
blotched at the large end with dark purple. I saw a small flock of six 
of these birds May 10th, which were the last seen here. Riverdale is on 
the Hudson River, sixteen miles north of New York Bay. — E. A. 
Bicknext, 
Bewicr’s Wren (Thryothorus Bewicki), although not a well-known 
rd to those not ornithologists, is not “ something of ararity” in the 
middle Atlantic States, as stated by Dr. Coues in the January number of 
the Naturatist. I have not failed to find considerable numbers of 
them for several years past. They appear to have a strong attachment 
for certain localities, and, if undisturbed, will return year after year to 
