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Tiki-Toheroa Medicinal Broth.
This material as its name indicates is a concentrated toheroa soup. It was made into a meal and used in the same way as described for the whole toheroa, but ha order to make a comparison the composition of the meal was so arranged that it had the same amount of toheroa solids as in the other case. Only one litter (Bd) was used, the growth curves of which are shown on Chart 2.
This litter consisted of five rats and was divided into two groups: Bd, I, two bucks; and Bd, II, three does. Basal diet began on the 20th day, and they were weaned on the 32nd day. By the end of six weeks from weaning the weights were stationary and eye-symptoms had begun in the form of congested zones round the eyes with haemor-
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rhagic secretion, and photophobia. The toheroa soup-ration was then given for ten days beginning at A-A in Chart 2 when the rats were 74 days old.
Bd, I, received the equivalent of 1.0 gm. toheroa, and showed rapid improvement in eyes, in weights, and in general health. In a fortnight after commencing the toheroa soup, the eyes would pass
Chart 2.—Effects of adding different amounts of tinned toheroa soup during period A to B.
for normal, and the animals were plump and lively, but two weeks later the eye-symptoms recurred and the weights fell. They died with typical symptoms of avitaminosis at 130 and 137 days.
Bd, II, received 1.5 gm. and showed similar recovery of eye-symptoms and growth. One of the three made quite a remarkable recovery from what seemed a hopeless condition. The effect on the
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growth-curves of this group seems less than in the case of Bd, I, which received the smaller dose, but this is probably due in part to the difference in the sexes, Bd I being bucks, and Bd II, does. These rats died at 113, 130, and 137 days. Unfortunately, circumstances did not allow of a further test with smaller quantities of this material.