BULLETIN OF THE BUSSEY INSTITUTION. 221 
encrusted with a white coating of carbonate of lime. MHallier remarks 
that this incrustation has long been familiar to gardeners, though usually 
mistaken by them for mould. It probably depends upon the decom- 
position of the soluble super-carbonate of lime by evaporation, which 
is always particularly rapid in the unglazed earthen pots. 
I am indebted to my assistant, Mr. D. S. Lewis, for his attention to 
the details of the experiments in this research. 
No. 19.— Supplementary Note to an Article on the Composi- 
tion of Pumpkins. By F. H. Storer, Professor of Agri- 
cultural Chemistry. 
By an oversight at the time of weighing the pumpkins described in 
the previous number of the “ Bulletin” (Vol. II. p. 81), no determina- 
tions were made of the proportion of rind as compared with the amount 
of flesh proper; and, when the article came to be written, it was found 
to be impossible to make good this defect, since no pumpkins could 
then be procured. It was not until a new crop of pumpkins had 
ripened, in the autumn of 1877, that I could determine the fact now in 
question. For this purpose, two medium-sized pumpkins were pro- 
cured, in October, 1877, that had grown not far from the Bussey 
Institution ; and the total weights of each were determined, together 
with the weights of rind and of the inside matter; 7. e., seeds, &c. The 
rind was pared to the same thickness as in the experiments of 1876 
(see p. 82), and by the same person.* The results of these weighings 
were as follows: — 
I. The pumpkin measured 22 & 17 cm. 
The weight of the whole pumpkin was . . . 4.770 kil. 
” %» 9) » rind 9» = + » + 0.210 ,, 
” ” » », seeds, &c. ae oo Pe Ae 
Hence the weight of flesh proper ,,. . . . 4.050 ,, 
* My assistant, Mr. D. S. Lewis. 
