■*8S9.J Proceedings of Scientific Societies. 459 
eluding those of Morning-glory, Musk-melon, Water-melon, 
Maples, Magnolia. Peach, Japanese Quince, Five-finger, 
etc., made this year on Staten Island, do seem to show that 
the elongated leaves grow much the more rapidly, that the 
palmate and pinnate leaves stand next in order, and the cir- 
cular and traverse leaves last. [A diagram was here pre- 
sented showing these results, in part, with the rate per day of 
growth ; also the slowly diminishing rate of growth of the 
leaf as it approached completion.] 
Of course a number of considerations occur at once to mod- 
ify the wholesale use of this conclusion. The relative size of 
the leaves compared should be similar, the condition or health- 
fulness of the plants alike, the nature of the plant tissue nearly 
the same, and the position and aspect of the leaves as regards 
favorable or unfavorable conditions for growth identical. The 
subject is suggestive and carefully followed up might lead to 
interesting results. 
Mr. Arthur Rollick showed fossil leaf impressions in fer- 
ruginous sandstone, found near Arrochar station by Mr. Gil- 
man S. Stanton. They are undoubtedly from the same for- 
mation as those from Tottenville (Cretaceous ?) described in 
the Proceedings of December 8, 1883, and like them, were not 
in place where found, but occurred in Drift rocks. The spec- 
imens are too fragmentary for determination, but the fact of 
their discovery at this new locality is a matter of interest and 
is therefore placed upon record. 
Specimens of bowlder clay from the same locality were also 
shown. It has been lately utilized for brick making. There 
is a fine exposure of modified drift overlaid by bowlder drift 
where the railroad has been cut through. 
Dr. A. L. Carroll noted the discovery on Staten Island re- 
cently of Bothriocephalus /atus— the first reported occurrence 
of this parasitic worm in America. 
Specimens of the " Large Mocker Nut," {Hicoria alba, (L.) 
Britton, var. maxima, (Nutt.) Britton.) were presented— being 
an addition to the local flora. They were collected by Dr. 
Britton near Court House station. 
Adjournment at ten o'clock. 
February 9, 1889.— Mr. Charles W. Leng read a paper 
upon " The Buprestidae of Staten Island," illustrated by spe- 
cimens of the species mentioned. 
It is thought that the larvae of many species take years to 
perfect their growth and an instance is recorded of a Buprestts 
