OP Tne OEE MEE Tenet 
ee ee 
Botany and Zoology. : 239 
every edition of his Genera Plantarum, writes “ HHypopitys, pice . 
ee that he had no intention of altering the form of the word. 
may therefore conclude that Jussieu and DeCondella: pee 
their successors have followed the rule of priority as well as the 
sense of the word in writing (not Hypopi'thys) but Hypo'pitys. 
The structure and function of Lenticels.— Heinrich Kle- 
Ria confirms Stahl’s description of the minute anatomy of these 
organs, and shows by experiments in winter (similar to those by 
_Haberlandt in summer), that they aid in the transfer of gases and 
aqueous vapor. He further shows that in some shrubs devoid of 
lenticels, rifts in the bark, connecting with the intercellular spaces, 
serve the same purpose. — Ber. d. dettsch. bot. Gesellsch., b ii, keg 
. Le 
6. The microchemical detection of Nitrates and Ntrites” in 
Plants is possible by the Jeageut suggested by Wagner, viz: 
Diphenylamin. Molisch one per cent, or a one pro mille 
solution in pure og ac applying this to dry sections. If 
either of the salts abov med is present, a deep blue coloration 
appears, which soon changes to brownish yellow. Brucin in about 
the same strength is arly as sensitive a test, producing a tran-— 
sient red or re ddieh-yellow color. Molisch employs this method 
also for approximate Nacarniesch of the amounts of the salts 
present, and finds that the percentage decreases from below up- 
ward in the plant. — Ber. der deutsch. bot. reetoona, i, ae 
On the woe and growth of Palms. ee lg po in 
the Proceedings of the American Phil. Soc., April 18, 1884, some 
interesting a of i ga 1 nnd apparently careful studies of the 
mode of growth o he essential points of differ- 
ence between these saaita aE tose obtained by other observers 
is; gen to the origin of the bundles + is yi ee at present to 
Say t 
ra ie that they grow downward from it, from the fro 
bases; Von Martius, that the grow both u and down, while I 
of the Sake of the body that they grow outward into the limbs. 
It is true that the general lengthening of le bundles takes place 
at the superior cd but there is a growth beside this. t the 
first appearance of the fronds at the a apex of the phyllophore | the 
fibro-vascular bundles are already connected with them, and just 
Ps intimately as they are in the perfectly developed frond, The 
internodes at this point are very short, but the bundles are t 
