738 
DISCUSSION AND CORRESPONDENCE. 
COLOR ASSOCIATIONS WITH NUMERALS, ETC. 
To THE EDITOR OF SCIENCE: In ScIENCE, Vol. 
VI. (1885), p. 242, I printed a note of experi- 
ments on color-associations with letters of the 
alphabet, days of the week, etc., in the case of 
my daughter Mildred. The subject was again 
treated, at more length, in Nature for July 9, 
1891, p. 223. On p. 224 a table was given 
showing the color-associations for my daughter 
in 1882, 1888, 1885, 1887, 1889, 1891. Since 
that time I have tested her color-associations on 
two occasions. In February, 1895, her replies 
agreed exactly with the last column of the table 
cited except that the color for 8 was marked as 
‘white.’ An experimentin August, 1899, agrees 
precisely with the results of 1895. I think the 
present note has a value because the experi- 
ments it describes now cover a period of seven- 
teen years and give a history, not an isolated 
record. 
EDWARD S. HOLDEN. 
THE WAGNER FREE INSTITUTE OF SCIENCE 
AND PROFESSOR DALL. 
On Monday, October 30th, the Wagner Free 
Institute of Science in Philadelphia presented to 
Professor William Healey Dall, of the Smith- 
sonian Institution, a gold medal as a slight 
token of their appreciation of his work in con- 
nection with the Transactions of the Institute. 
The medal has the head of the founder of the 
Institute on the obverse side, with the name of 
the Institution. On the reverse is engraved 
“¢ Awarded to William Healey Dall for his in- 
vestigations and writings in Paleontology— 
1899.”’ 
Accompanying the medal was a very hand- 
somely engrossed book of resolutions stating 
that ‘‘ Whereas, Professor William Healey Dall 
has contributed greatly to the advancement of 
Science by his investigations in the department 
of tertiary geology and has rendered most valu- 
able service to the Wagner Free Institute of 
Science by enabling it, through his numerous 
and exhaustive contributions to its Transac- 
tions, to publish the results of his investigations 
to the world. Now, therefore, be it Resolved 
by the Board of Trustees and the Faculty of the 
SCIENCE. 
[N. S. Vou. X. No. 255. 
Wagner Free Institute of Science that a medal 
be prepared and presented to Professor Dall in 
recognition of his distinguished services in the 
cause of Science and in testimony of the high 
appreciation of his work by the Trustees of 
this Institute.”’ 
The work on the Tertiary Fauna of Florida, 
begun in 1886 under the auspices of the Wagner 
Free Institute of Science, constitutes one of the 
most important advances in American Paleon- 
tology. The discovery of the Pliocene beds of 
the Caloosahatchie river by Professor Heilprin 
and Mr. Joseph Willcox in 1886 and the subse- 
quent investigations by Dr. Wm. H. Dall have 
completely revolutionized the geological theory 
as to the formation of the Peninsula of Florida 
and the adjacent States. 
The Transactions of the Institute have not 
only met with the highest commendation from 
American Paleontologists and Conchologists 
but from the European scientists as well. On 
several occasions prominent men from various. 
parts of Europe have visited the Institute to 
see, as they said: ‘‘The Institution that has 
published such valuable and finely executed 
Transactions.”’ 
Some idea of the amount of labor involved in 
Dr. Dall’s work may be gained from the fol- 
lowing summary : 
The total number of pages in the four parts. 
of Vol. III. is 947, with 35 plates that contain 
639 figures, and one map. 
Part I. On the Gastropods. Contains refer- 
ences to over 300 species including the descrip- 
tions of 122 new species and varieties, that are 
represented on twelve plates by 192 figures. 
Part II. Is a continuation of the Gastropods, 
as introductory chapter on the Marine Pliocene 
Bed of the Carolinas, and is followed by refer- 
ences to upwards of 400 species including the 
descriptions of 156 new species and varieties. 
that are illustrated by 203 figures. 
Part III. Forms an introductory chapter to. 
Part IV. containing a new classification of the: 
Pelecypoda, with an enumeration of the differ- 
ential characters of the orders, suborders, super- 
families and families, a statement of their range 
in geological time, and an enumeration under 
each family of the chief generic groups believed. 
to be referable to it. 
