EXTRACTS AND ABSTRACTS. 339 
cheesy consistence, it was also brown in colour, and evidently contained 
d 
fragments of plant tissues. It burnt with tolerable readiness, and coul 
be MEM in the Phe of a candle. A copious coherent ash was left, and 
water at the bottom, and with a certain uen of sy matter. I 
came a specimen to the Rev. E. O’Meara, who has so kind as 
* : : : 
of a eursory examination the following species: 
Dentieula tenuis, abundant. Epithemia LI frequen 
Cymbella onec gn rupestris, Seal 
very frequent. Nitzchia palea, freque 
Tabellaria benc. occasionally. Amphora euo dd frequent. 
Mastogloia Smithii, frequent. Navicula rhomboides, rare 
ynedra capitata, few fragments. »,  gibberula, rarely. 
All these, he remarks, are fresh-water forms, identical with those found 
plentifully i in a living state in our own country. I may m mention that a 
fragment of a substance exactly similar, as far as one can judge from ap- 
pearance, to coorongite has been given to me by my friend Dr. Flight, 
who informs me that it was found at Iquiqui, in Peru. —W. 
TON DYER. 
Extracts and Abstracts. 
ON SOME SOUTHERN PLANTS OBSERVED IN THE 
ENVIRONS OF PARIS IN 187% 
Ina recently pepe: part of the French Botanical Society's ‘ Bulletin’ 
xviii. pp. 246-252), MM. Eugene e Gaudefroy and Edmond Mouille- 
ion of botanists of which they 
in iting in behalf of an associati 
are members, have given the results of their labours around Paris in that 
year ll had known the gro for ten vears previously. The 
ed likely to 
their ene er ad of Lathryrus Ochre in the 
second, awakened their attention ; othcr — rapidly mon 
and E set about preparing a flora of the sieges—a Floru 
Olsidionalis, being a list of the plants —— 2 Paris and its eet 
iade environs by the Heint pos besieging a 
: 8 
points 2" by t the Germans, there was little of i 
uts being noted, Vicia villosa, of which there " a single specimen 
gathered ai at Villiers-le-Bel; Stenactis annua, a possible “re — at 
