JV. S^rt of a Letter from Mr Antony van Lecu wen- 
hoe k, K (^. S. ancerning green Weeds grwing in 
Water. ^ anifome Animalcula found about them. 
Delft in Holland, 25 Decemb. 1702. 
I Have often tieard the Common People fay, char that 
Green Stuff or Weeds which are obferved to drive upon 
the Water fpring oat of the Ground fron^under the Water. 
I could by no means admit of this Affertion, for as often 
as I have obferved the faid Green Weeds, I have always ^ 
found that they are produced from the Seeds of the fame 
kind, as all other Trees and Plants. 
I have always obferved too, that this Green matter does 
not grow in Deep Waters, tho they are fmall and ftill 5 
and that wide and (hallow Waters abound therewith, and 
efpecially Motes and Ditches 5 and that the Wind does 
it no harm* 
I have likewife found that the green Weeds in thofe 
Ditches which have but little Water in them, are very 
fmall in comparifon of thofe in larger \Vaters, and near the 
fides of the Banks where rhey are (hallow, and very little 
motion in them. 
Delfs-haven belongs to our Town and lies about 2 hours 
diihnce from it ^ from that Town, by means of a Sluce, the 
Water of the River Maes with ths flood in Summer time^ is 
brought into our. Town 5 and it is as clear as if the River it 
felf mn through the Town. 
Vv^ith this Water comes in alfo a little of this Green 
Stuff, ' but fo little that we were half an hour a fiftiing up 
56 of chofe Weeds and potting tiiem into an Earthen Pot, 
together ¥/ith a large quantity of their own Water, for we 
took 
