Polly reached Liberty Street where it was crossed by Union, but was taken somewhat aback when she looked at a number on the west side and found it to be only 452.

"Never mind!" was her second thought; "there are not quite three hundred numbers more, and half of those are on the other side; besides, they skip lots of them."

So she walked on contentedly, keeping track of the numbers as she pa.s.sed along. They counted up fast, the houses were so thickly set. Polly thought the occupants must all be out of doors, for lounging men and women filled the doorways, and the sidewalks were scattered with children. The air grew hot and stifling and full of disagreeable odors. The little girl half wished that she had not come. Then she remembered how pleased Brida would be to see her kitten again, and that gave her new strength and courage.

She was very tired when she came to the little shop numbered 703; but with the glad thought that the "brown house" could not be far off she began to look for it.

Directly across her way was stretched a jumping rope, which, as she was about to step over, the girls at either end whirled up in front of her. To the astonishment of the mischievous tricksters, Polly skipped into time as adroitly as the most expert rope-jumper could have wished, and the giggling pair almost forgot their part.

But they recovered themselves to give Polly a half-dozen skips.

Then, clearing the rope with a graceful bound, she turned to one of the girls.

"Can you tell me, please, where Mrs. MacCarthy lives?--Brida MacCarthy's mother?"

With a second surprise on her freckled face, the child pointed to a fat, red-cheeked woman, who was cooling herself with a big palm-leaf fan, in a bas.e.m.e.nt doorway just beyond.

"Thank you," was the polite response, and Polly descended the short flight of steps into the bricked area.

The woman looked up expectantly.

"I'm Polly May, of the hospital staff," the little girl announced modestly, "and Brida would like her kitten, please."

The smile on Mrs. MacCarthy's face expanded into a big, joyous laugh.

"Does she now? Moira! Katie! D'ye here that? Brida's sint f'r her cat! Sure an' she moost be gittin' 'long rale well! An' ye're from th' hospital! Moira! Where's yer manners? Fetch th' little lady a chair! Katie, git a mug o' wather an' wan o' thim big crackers. Don't ye know how to trate comp'ny?"

In a minute Polly was seated, a china mug of water in one hand, and a crisp soda biscuit in the other, while the MacCarthy family circled around her, eager for news from the beloved Brida. There were only encouraging accounts to give of the little girl with the broken ankle; but they led to so many questions that Polly began to wonder how she should ever escape from these friendly people, when Popover herself solved the question.

The pretty black kitten suddenly appeared at the visitor's side, and at the first caressing word from Polly jumped into her lap.

"D' ye see that?" cried the delighted mother, and in the momentary excitement Polly arose and said that she must go.

Brida's sisters and small brother accompanied her for two blocks up the street, and then, with numerous good-byes, they left her to her long, wearisome walk.

She had not gone far before she realized that the warm little animal was more of a burden than she had counted on, exhausted as she was already with her unusual exercise; but she kept up courageously, even making little spurts of speed as she would wonder if Miss Lucy were becoming anxious about her. After awhile, however, instead of hurrying, she was obliged to stop now and then on a corner, to catch the breeze coming up from the sea, for she felt strangely faint. When she finally trudged up Hospital Hill, the air grew cool all at once, and she quite forgot herself for thinking of Brida and Miss Lucy.

At the door of the ward she paused for a peep. The nurse was not in sight. A few of the children were gathered at the windows with books and pictures; several were on the floor playing quiet games.

So softly did she step that n.o.body knew she was there until she was well in the room. The, spying both her and the kitten, there was a shout and a rush.

"No, you can't have her yet!" cried Polly, as small hands were outstretched to lift the now uneasy burden from her arms. "Brida has first right, because it's her kitten."

"Oh, Popover!" squealed the little owner delightedly, snuggling the furry creature to her cheek.

"Where's Miss Lucy?" demanded Polly, waiving the children's eager questions.

"Oh, they sent to have her come somewhere!" answered Ethel Jones. "She went in an awful hurry, and said prob'ly she'd be back pretty soon; but she has n't come yet."

"She let Leonora be monitor," put in Elsie Meyer. "I guess she'd 'a' let me, if I'd been up."

"I wish she would come," said Polly anxiously, "for I want to surprise her with Popover--it's Miss Lucy's birthday, you know."

"Somebody's coming now," and Cornelius O'Shaughnessy bent his head to listen. "'T ain't her step," he decided disappointedly, and the next moment the tall form of Miss Hortensia Price was seen in the doorway.

"Quick! Keep her out o' sight!" whispered Polly, pushing Popover's little black head down under the sheet.

The stately young woman walked the length of the room without a word, and calmly sat down at the small table where Miss Lucy was accustomed to prepare her medicines and to make such notes as were needful.

As Miss Price took up the little memorandum book and began to look it over, Polly's heart almost stood still with consternation. She had come to stay! Polly knew the signs. Such sudden shifts were common enough in the hospital, but only twice, during Polly's stay, had the occurred in the convalescent ward, and Miss Lucy had been in charge for so long now that she had ceased giving herself any worry over a possible change.

For a moment the little girl stood hesitant; then the sight of Brida, white and scared on her pillow, roused her to quick thought. If she could only smuggle Popover down into Dr Dudley's office before she was discovered! Instinct told her that "High Price" would never tolerate a kitten in the ward. She took one step forward.

"Me-ew!" sounded faintly from Brida's cot.

The nurse raised her head, listened inquiringly, and then resumed her work of examining the patients' records.

Polly stole nearer the bed.

"Me-ew!" came again, louder than before. This time there was no mistaking its locality.

Miss Price sprang from her chair, and strode straight to where Brida lay trembling. Popover's insistence for more air and a free outlook was causing the coverlet to rise and fall in a startling way.

"How came that cat here?" demanded the nurse, pulling aside the bedclothing.

"I brought her," answered Polly. "She's Brida's kitty, and we were going to give Miss Lucy a birthday surprise."

A faint smile flickered on the young woman's face. The she made a grab at the now frightened kitten; but the little creature slipped from her hand, and jumping to the floor dared towards the hall.

"Oh, me dirlin' kitty!" wailed Brida. "She'll be losted! Oh, Polly, ketch her!"

Polly, however, was already flying in pursuit of the terrified cat.

"Shut that door!" called the mistress of the ward, as the eager children rushed after. "And stay inside, all of you!"

Cornelius O'Shaughnessy reluctantly obeyed the first order, and the rest trailed back in disappointment. So exciting a race was not an everyday occurrence.

Polly, too far away to heed either command, was alarmed lest Popover might manage to escape from the building, in which case there would be small chance of catching her. On and on the little cat led her, giving no ear to the coaxing, "Kitty, Kitty, Kitty!" which she was constantly calling. Around and around the big halls, up this flight of stairs and down that, into room after room whose doors stood enticingly open, raced Popover and Poly, while nurses and physicians that chanced their way stared and laughed at the astonishing sight.

Just as the kitten reached the foot of the first-floor staircase, with her pursuer close behind, the front door opened, and Popover darted towards the pa.s.sage of escape.

"Oh, shut the door quick! Catch her! Catch her! Don't let her get out!"

This most unexpected command, in Polly's voice, Dr. Dudley endeavored to obey. He did succeed in slamming the door in front of p.u.s.s.y, though at the risk of nipping her little black nose; but when he stooped to s.n.a.t.c.h her she slipped between his feet, and dashed into his office. Polly flew after, and the door went together just as the Doctor reached it.

"Rather an unusual reception this is," he twinkled, as Polly let him in, a minute later. "Frighten me out of my wits by screaming at me to catch a wild animal, and then, when I've done my best, shut the door of my office right in my face! What do you mean by such extraordinary conduct, Miss Polly May?" The physician shook a threatening finger and the flushed and laughing little girl.

"You don't look very scared," she giggled; and then as he dropped into his lounging-chair she slipped into her favorite position, atilt on its arm, and leaned confidingly against him.

"Oh, I've had such a time with that kitten!" she sighed, smiling across at the little creature, now curled up contentedly on the Doctor's fur rug.