196 
MiscelJanea 
which ha\'e ceased to add to the child deathrate by the time the mother returns to work and we 
must increase in this way tlie percentage of deaths of any disease of the later months of a child's 
first year of life. 
It seems to me that a comparison of deaths in this way will really gi\'e very little information ; 
an excess of deaths from one disease means a defect in some other disease ; it is shown that 
when the baby is nursed exclusively by the mother 26'0 per cent, of the deaths were from 
diarrhoea, gastritis, etc. ; when partly n\irsed the percentage was 52'3 and when artificial food 
was exclusively emi3loyed the percentage of deaths from diarrhoea etc. was 42"9 ; the baby 
certainly dies less from gastritis when it is breast fed but it dies in greater numbers from other 
causes. Here again there is a difficulty ; deaths from congenital diseases fall on the first weeks 
of life when breast feeding is the rule, while deaths from gastritis etc. fall on the later months of 
child life when "partial breast feeding" has become more common and I do not think it is 
possible to draw any conclusions from a comparison of deaths from one disease to deaths from 
all diseases as to the importance of artificial feeding in relation to deaths from gasti'itis. 
Interesting information is given as to the reasons for artificial feeding ; the numbers are not 
large enough to justify any definite conclusions, but this is such an important part of any inquiry 
into the influence of artifical feeding on the infant deathrate that one welcomes its inclusion in a 
report of this kind. 
We have been requested by Professor F. M. Urljan to insert the accompanying announcement. 
ANNOUNCEMENT. 
A priz(! of One Hundred Dollars (iJlOO.OO) is offered for the best paper on the Availability of 
Pearson's Fornmlae for Psychophj'sics. 
The rules for the solution of this problem have been formulated in general terms by William 
Brown. It is now required (1) to make their formulation specific, and (2) to show how they 
work out in actual practice. This moans that the writer must show the steps to be taken, 
in the treatment of a comj^lete set of data (Vollreihc), for the attainment in every ease of a 
definite result. The calculations should be arranged with a view to practical application, i.e. so 
that the amount of computation is reduced to a minimum. If the labour of computation can be 
reduced by new tables, this fact should be pointed out. 
The paper must contain samples of numerical calculation, but it is not necessary that the 
writer have exiterimental data of his own. In default of new data, those of F. M. Urban's 
experiments on lifted weights (all seven observei's) or those of H. Keller's acoumetrical experi- 
ments (all results of one observer in both time-orders) are to be used. 
Papers in competition for this Prize will be received, not later than December 31st, 1914, by 
Professor E. B. Titchenor, Cornell Heights, Ithaca, N.Y., U.S.A. Such papers are to be marked 
only with a motto, and are to be accompanied by a sealed envelope, marked with the same motto, 
and containing the name and address of the writer. The Prize will be awarded liy a committee 
consisting of Professors William Brown, E. B. Titchener and F. M. Urban. 
The committee will make known the name of the successful competitor on July 1, 1915. 
The unsuccessful papers, with the corresponding envelopes, will be destroyed (unless called for 
by their authors) six months after the publication of the award. 
Corrigendum. Dr Derry has most kindly pointed out a slip on p. 307, Vol. VIII ; the value 
of 100 (5 - H) jL for Congo female crania is +1-9 and not - 1 -9, which brings these crania nearer 
to their proper place, and the remarks on this point p. 308 should accordingly be cancelled. 
