1890-91.] Prince of Monaco on Ship for Study of the Sea. 299 
domain of the sea is full of mysteries which the work of man will 
surely penetrate, and the collection of observations which enable 
savants to advance along this path would be a noble aim in the 
life of many people who weary themselves in the abundance of their 
goods, and wear themselves out in their uselessness. 
To-day I am able to realise the plans which I have dreamed of 
so often, when, each year, during months of struggle with the sea, 
I could perceive treasures for science without the power of securing 
them. And I should have rejoiced to bring before yon, the 
initiators of the great efforts made in this line, the god-parents of 
the Challenger, to bring before you my ship, the “Princesse Alice,” 
the work of my waking thoughts and of my devotion to science. 
The Messrs Green of Blackwall, who have built her, may be proud 
of their work, and their skill has powerfully aided me in the 
realisation of my ideas. 
The yacht “ Princesse Alice ” has a displacement of 650 tons, and 
I have only fitted her with auxiliary steam power in order to 
reserve as much space as possible for the arrangements necessary 
for engaging in serious scientific work, combined with the wants 
of social family life. Nevertheless, the engine-room is sufficiently 
large to accommodate various apparatus, which are thus under the 
management of one engineer ; they are — a dynamo, an ammonia 
freezing-machine, and a water-still. 
The dynamo supplies 100 lamps of 16-candle power for interior 
lighting, three 100-candle power lamps for lighting the deck when 
work is being carried on during the night, and a search light of 
10,000 candles for illuminating the sea when work is being carried 
on in boats, and for picking up buoys. 
The freezing-machine has several uses. By means of the 
liquefaction of ammonia gas, it produces a very low temperature, 
which is directly communicated to a liquid which does not freeze 
at this temperature, a brine which is then conveyed in tubes to 
the refrigerating chamber. This receptacle can contain several 
moulds of different forms and sizes to receive the objects which, for 
anatomical, histological, or zoological purposes, it may be wished to 
freeze, in order to protect them from the damage inseparable from 
the chemical processes at present in use. Once frozen, these objects 
will be placed in a cold chamber, kept at a temperature near that of 
