SCIENTIFIC SUMMARY. 
81 
deliberations : — In the first line, Herr Pringsbeim, of Berlin ; in the second 
line, ex cequo, and in alphabetical order, M. de Bary, of Halle ; Mr. Ben- 
tham, of London ; M. Goeppert, of Breslau ; Professor Asa Gray, of Cam- 
bridge, Massachusetts, U.S.; Herr Nsegeli, of Munich; and Signor Parlatore, 
of Florence. Out of .41 votes, 32 were for M. Pringsheim, 5 for Signor 
Parlatore, 3 for Herr Goeppert, and 1 for Dr. Asa Gray. M. Pringsheim 
was therefore declared elected. 
Wave Diagrams of the Effects of Manures and other Influences on Plants . 
— At a very recent meeting of the Horticultural Society, Dr. Masters pre- 
sented a series of diagrams showing in graphic form the relative degrees of 
vigour shown by the plants in the experimental grounds at Chiswick. The 
most striking results shown in the diagrams were as follows : — In almost 
every case the plants in the unmanured boxes were the least vigorous. The 
application of purely mineral manures was productive of little or no result 
in the case of the grasses, but was much more effective in promoting vigour 
in the case of the clovers. A striking contrast was exhibited in the case of 
almost all the twelve separate kinds of plants treated with ammonia salts, 
or with nitrate of soda respectively. It was shown by Dr. Masters’ tables 
that almost invariably when the plants treated with ammonia salts mani- 
fested an increased degree of vigour, those treated with nitrate of soda 
showed a corresponding decrease. These contrasted fluctuations occurred 
at a time when the weather tables showed a high rainfall and a decreased 
temperature. Similar antagonistic results, but manifesting themselves 
at a later period, when the temperature was higher and the rainfall 
less, prevailed to a less extent in the boxes manured with a combination 
of mineral manures and nitrate of soda, and of mineral manures and 
ammonia respectively. 
The Poison of the Tutu ( Coriaria rusci folia) is reputed to have been 
separated from the seeds by Mr. Skey. The investigates were carried on 
in Dr. Hector’s laboratory in the New Zealand Institute. 
Motion of Protoplasm in Anacharis. — This is the subject of a memoir by 
Professor Schnetzler in the Archives des Sciences for September. The author 
tried various physical influences, and concludes that heat and light have 
most to do with the matter. Heat is especially active in promoting the 
movement ; in the case of light, the most refrangible rays have the most 
action. — Monthly Microscopical Journal , November. 
The Crystals of Logwood. — Haematoxylin, the colouring matter of log- 
wood, has been found to be a very beautiful object for the polariscope 
microscope ; according to Mr. Dancer, of Manchester, quite equal to 
salicin. 
The Stems of the Arborescent Lycopodiacece. — In the Monthly Microscopical 
Journal for November, Mr. W. Carruthers continues his report on the 
above. He describes, and figures in a good plate, the structure of XJloden- 
dron minus. 
The Double Plate of Aulacodiscus Oreganus. — Mr. R. C. Greenleaf assert s 
that it can be demonstrated experimentally, that these discs are formed of 
two shells. He believes that many of the so-called species (even some of 
those described by Dr. Greville) have originated in this manner. — Proceed- 
ings of Boston Society of Nat. Hist. 1869. 
YOL. IX. NO. XXXI Y. G 
