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el mas puro y concentrado que se pueda obtener. Describirémos sus principales propiedades.

Es un líquido sin color, trasparente, de un olor fragante y bastante agradable; su sabor es fuerte, penetrante y abrasador: su accion sobre nuestros órganos es demasiado viva para que podamos soportarle en este estado de pureza; mas dilatado en agua y tomado en pequeña cantidad escita y reanima nuestras fuerzas: una dósis demasiado fuerte determina la embriaguez.

La gravedad específica del alcohol absoluto es, segun Richter, de 0,792 á la temperatura de 200; Lowitz le establece á 0,791 el mas rectificado que podia obtenerse ántes de conocerse el procedimiento que acabamos de describir pesaba 0,820 á 16°. Éste contenia, como puede verse en la tabla siguiente, de 10 á 11 por ciento de agua. Lowitz ha dado las gravedades específicas de las mezclas de alcohol y de agua en todas las proporciones desde un céntimo hasta partes iguales. Estas densidades se han tomado á 20! Lowitz, á 16° por

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Thomson. Como esta es cosa de utilidad diaria hemos creido deber insertar aqui este cuadro. Es sensible que las densidades no se hayan tomado mas que á 16 y á 20: Blagden y Gilpin han formado tablas para 15 grados diferentes, pero no han tomado por base el alcohol absoluto, y cada adicion de agua es de 5 partes mas que la precedente, lo que disminuye su utilidad.

En el artículo areómetro se tratará de la influencia de la temperatura en la densidad de los líquidos.

Tabla de la fuerza del alcohol de densidades diferentes.

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Gravedades especificas reales à diferentes temperaturas, segun Gilpin.

Temperatura.

Alcohol
puro.

100 100 100 100 100 100 100 100 100 100 100 100

5 Agua. 10 Agua 15 Agua 20 Agua 25 Agua 30 Agua 35 Agua 40 Agua 45 Agua 50 Agua 55 Agua 60 Agua

1° cent. 0, 838960, 84995 0,85957 0, 86825 0, 87585 0, 88282 0, 889210, 895110, 90c540, 90558 0, 90023 0, 91449 0, 91847

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II

82977 84076

8504

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86451

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82396 83371 84243 85036 85757 86411 87021 8759% 88120 88605 89043 86787 87360 87889 88376 88817 89230

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88003

86302 86879

87421 87915 88357 88769

Temperatura.

65

60

Gravedades especificas reales à diferentes temperaturas (Continuacion).

50

45 40 35

30

25

20

15

10

5

55
Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol
100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag. 100 Ag.

-1° cent. 0, 959440, 96209 0, 96470 0, 96019 0, 96967 o, 97200 0, 97418 0,97635 o, 97860 o, 98108 0,98412 0, 988040, 99334

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Gravedades especificas reales á diferentes temperaturas. (Continuacion ).

Temperatura.

100

100

100

100

100

100

100

100

95

90

85

80

75

70

Alcohol

Alcohol

Alcohol Alcohol Alcohol

100 Ag.

100 Ag.

100 Ag.

100 Ag. 001 Ag. 100 Ag.

Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol Alcohol 65 Agua 7o Agua 75 Agua 80 Agua 85 Agua 90 Agua 95 Agua 100 Ag.

1° cent. 0,92217 0,92563 0,92889 0,93191 0,93474 0,93741 0,93991 0,94222 0,94447 0,94675 0,94920 0,95173 0,95,29 0,95681

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