266 REPORTS ON THE STATE OF SCIENCE, ETC. 
with young in it on March 9, but I was unable to decide from the reports of those who 
fed and tended the animals, exactly at what time between the morning of March 7 and 
that of March 9 the young were born. On March 10 one of the young was found dead 
with the legs eaten off in the outer compartment of the hutch. Subsequently I found 
there were three young surviving, all normal in every respect, completely albino, 
and with perfect eyes. 
The second albino doe was mated with one of the bucks on March 3. 
Injections of pulped lenses were made into hens as follows : 
February 10.—Two lenses from half-grown rabbit pounded up in mortar, made up 
to 10 c.c. with salt solution, 2.5 c.c. injected into each of four hens: into peritoneal 
cavity behind tip of sternum. 
February 17.—Second injection as before. 
February 24.—Third injection as before. 
March 3.—Fourth injection as before. 
March 10.—One of the hens had died. Injected remaining three fifth time, and a 
new white hen first time. 
March 19.—Injected two new hens first time, one white hen second time, one 
black hen sixth time. Used four lenses from two very young rabbits. 
Albino 9 No, 2 was injected with serum from blood of the injected hens as follows : 
Took the blood from one of the injected hens by the method described by Guyer 
and Smith. Anzsthetised the hen with ether, then plucked the feathers from the neck, 
washed the skin with spirit, cut through the skin, then through the gullet and trachea, 
and turned these back ; then with large scissors cut through the neck, and passed the 
latter quickly into a small cylindrical jar to collect the blood. 
Subsequently, in taking the blood from other hens, I omitted to cut through the 
gullet and trachea, merely turning these tubes back with the head when the latter was 
severed from the neck, and thus avoiding all risk of contaminating the blood collected 
with septic matter from the gullet or trachea. 
The blood was left in an ice-chest till next day, then centrifuged and the serum 
poured off. 
March 13.—5 c.c. serum from injected hen injected into marginal vein of ear of 
pregnant female Albino No. 2. 
March 16.—4 c.c. of serum from same blood injected. Rabbit showed distinct 
reaction, in quickened respiration and heart-beat, for about half an hour, when it had 
become nearly normal again. 
March 18.—5 c.c. serum from blood of another hen injected. 
March 19.—About 5 c.c. serum from same blood injected. 
March 21.—The blood of another hen had been left twenty-four hours in the ice- 
chest without ice; the clot was much contracted, and a quantity of clear serum 
separated. I injected 7 c.c. of this serum into ear of pregnant rabbit. 
March 23.—Centrifuged remainder of last lot of blood and injected 6 c.c. serum 
ine some added salt solution into same rabbit. Had some difficulty in passing the 
ood. 
On March 24 the rabbit was not quite well, the ear into which the injection was 
made was somewhat swollen. She afterwards recovered. 
This rabbit, Albino No. 2, gave birth to a litter of young on the night of April 3-4. 
She was mated in the afternoon of Tuesday, March 3. Birth took place, therefore, 
31} days from mating, not thirty days, which is usually given as the period of gestation. 
The number of young was afterwards found to be six, and they were all carefully 
examined as soon as their eyes were open, which was on the eleventh day after birth. 
No abnormality could be detected in the eyes of any of them. 
Another experiment of the same kind was made with the third doe, which had 
colour on snout and ears. She was mated on April 9, and the same routine was followed 
as with Albino No. 2. There is no need to give details, as although the mating was 
complete, no young were produced. Hither fertilisation failed or abortion occurred, 
but no signs of abortion or prematurely born young were ever discovered in the hutch 
in which she was kept. 
At the beginning of May I was obliged to abandon the experiments for a time on 
account of an attack of iritis. WhileI was absent, Doe No. 3 died. On June 15 I was 
able to resume the work, and began to prepare more hens to supply serum to be in- 
jected into Albino No. 1, which produced a litter previously, as mentioned above, 
without being injected. This experiment is now proceeding, and others will follow. 
An account of the expenditure of the grant of £20 will be sent later, and it is 
